69640694 has 16 divisors (see below), whose sum is σ = 108055680. Its totient is φ = 33626880.

The previous prime is 69640679. The next prime is 69640717. The reversal of 69640694 is 49604696.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 40892 + ... + 42560.

It is an arithmetic number, because the mean of its divisors is an integer number (6753480).

Almost surely, 2^69640694 is an apocalyptic number.

69640694 is a deficient number, since it is larger than the sum of its proper divisors (38414986).

69640694 is a wasteful number, since it uses less digits than its factorization.

69640694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 69640694 is about 8345.0999994008. The cubic root of 69640694 is about 411.4221759758.

The spelling of 69640694 in words is "sixty-nine million, six hundred forty thousand, six hundred ninety-four".