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7690081 = 77115473
BaseRepresentation
bin11101010101011101100001
3112110200210211
4131111131201
53432040311
6432454121
7122236030
oct35253541
915420724
107690081
114382743
1226aa341
131793359
141042717
15a1d821
hex755761

7690081 has 8 divisors (see below), whose sum is σ = 8913024. Its totient is φ = 6498240.

The previous prime is 7690061. The next prime is 7690091. The reversal of 7690081 is 1800967.

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

It is not a de Polignac number, because 7690081 - 213 = 7681889 is a prime.

It is a super-2 number, since 2×76900812 = 118274691573122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7690021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7240 + ... + 8233.

It is an arithmetic number, because the mean of its divisors is an integer number (1114128).

Almost surely, 27690081 is an apocalyptic number.

7690081 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7690081 is a deficient number, since it is larger than the sum of its proper divisors (1222943).

7690081 is a wasteful number, since it uses less digits than its factorization.

7690081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7690081 is about 2773.0995294075. The cubic root of 7690081 is about 197.3832541884.

The spelling of 7690081 in words is "seven million, six hundred ninety thousand, eighty-one".

Divisors: 1 7 71 497 15473 108311 1098583 7690081