64694393 has 8 divisors (see below), whose sum is σ = 65180160. Its totient is φ = 64211040.

The previous prime is 64694369. The next prime is 64694407. The reversal of 64694393 is 39349646.

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 2^k-64694393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64694323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149888 + ... + 150318.

It is an arithmetic number, because the mean of its divisors is an integer number (8147520).

Almost surely, 2^64694393 is an apocalyptic number.

It is an amenable number.

64694393 is a deficient number, since it is larger than the sum of its proper divisors (485767).

64694393 is a wasteful number, since it uses less digits than its factorization.

64694393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207.

The product of its digits is 419904, while the sum is 44.

The square root of 64694393 is about 8043.2824767007. The cubic root of 64694393 is about 401.4414513884.

The spelling of 64694393 in words is "sixty-four million, six hundred ninety-four thousand, three hundred ninety-three".