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70648927 = 163433429
BaseRepresentation
bin1000011011000…
…00010001011111
311220221100002221
410031200101133
5121041231202
611002130211
71515335356
oct415402137
9156840087
1070648927
1136974648
121b7b0967
1311837ccb
14955099d
156308037
hex436045f

70648927 has 4 divisors (see below), whose sum is σ = 71082520. Its totient is φ = 70215336.

The previous prime is 70648913. The next prime is 70648931. The reversal of 70648927 is 72984607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72984607 = 274126627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70648927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70648967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216552 + ... + 216877.

It is an arithmetic number, because the mean of its divisors is an integer number (17770630).

Almost surely, 270648927 is an apocalyptic number.

70648927 is a deficient number, since it is larger than the sum of its proper divisors (433593).

70648927 is a wasteful number, since it uses less digits than its factorization.

70648927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433592.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 70648927 is about 8405.2916070771. The cubic root of 70648927 is about 413.3981448982.

The spelling of 70648927 in words is "seventy million, six hundred forty-eight thousand, nine hundred twenty-seven".

Divisors: 1 163 433429 70648927