64442694 has 16 divisors (see below), whose sum is σ = 130439232. Its totient is φ = 21221928.

The previous prime is 64442683. The next prime is 64442717. The reversal of 64442694 is 49624446.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64204 + ... + 65199.

It is an arithmetic number, because the mean of its divisors is an integer number (8152452).

Almost surely, 2^64442694 is an apocalyptic number.

64442694 is an abundant number, since it is smaller than the sum of its proper divisors (65996538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64442694 is a wasteful number, since it uses less digits than its factorization.

64442694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129491.

The product of its digits is 165888, while the sum is 39.

The square root of 64442694 is about 8027.6206935804. The cubic root of 64442694 is about 400.9201608038.

The spelling of 64442694 in words is "sixty-four million, four hundred forty-two thousand, six hundred ninety-four".