70685923 has 32 divisors (see below), whose sum is σ = 92897280. Its totient is φ = 52150560.

The previous prime is 70685911. The next prime is 70685929. The reversal of 70685923 is 32958607.

It is a de Polignac number, because none of the positive numbers 2^k-70685923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70685929) 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 31 ways as a sum of consecutive naturals, for example, 295638 + ... + 295876.

It is an arithmetic number, because the mean of its divisors is an integer number (2903040).

Almost surely, 2^70685923 is an apocalyptic number.

70685923 is a deficient number, since it is larger than the sum of its proper divisors (22211357).

70685923 is a wasteful number, since it uses less digits than its factorization.

70685923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 70685923 is about 8407.4920755241. The cubic root of 70685923 is about 413.4702922969.

The spelling of 70685923 in words is "seventy million, six hundred eighty-five thousand, nine hundred twenty-three".