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87414769 = 1361110233
BaseRepresentation
bin1010011010111…
…01011111110001
320002111010112001
411031131133301
5134334233034
612401334001
72111004361
oct515353761
9202433461
1087414769
1145386012
1225337301
1315158320
14b8769a1
157a1aa14
hex535d7f1

87414769 has 8 divisors (see below), whose sum is σ = 95683112. Its totient is φ = 79367040.

The previous prime is 87414739. The next prime is 87414773. The reversal of 87414769 is 96741478.

It can be written as a sum of positive squares in 4 ways, for example, as 6630625 + 80784144 = 2575^2 + 8988^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87414769 is a prime.

It is a super-2 number, since 2×874147692 = 15282683678646722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87414739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54324 + ... + 55909.

It is an arithmetic number, because the mean of its divisors is an integer number (11960389).

Almost surely, 287414769 is an apocalyptic number.

It is an amenable number.

87414769 is a deficient number, since it is larger than the sum of its proper divisors (8268343).

87414769 is a wasteful number, since it uses less digits than its factorization.

87414769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110307.

The product of its digits is 338688, while the sum is 46.

The square root of 87414769 is about 9349.5865683997. The cubic root of 87414769 is about 443.8078074793.

The spelling of 87414769 in words is "eighty-seven million, four hundred fourteen thousand, seven hundred sixty-nine".

Divisors: 1 13 61 793 110233 1433029 6724213 87414769