64442697 has 16 divisors (see below), whose sum is σ = 94261440. Its totient is φ = 38836800.

The previous prime is 64442683. The next prime is 64442717. The reversal of 64442697 is 79624446.

It is not a de Polignac number, because 64442697 - 2⁶ = 64442633 is a prime.

It is a super-3 number, since 3×64442697³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (64442797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 11367.

It is an arithmetic number, because the mean of its divisors is an integer number (5891340).

Almost surely, 2^64442697 is an apocalyptic number.

It is an amenable number.

64442697 is a deficient number, since it is larger than the sum of its proper divisors (29818743).

64442697 is a wasteful number, since it uses less digits than its factorization.

64442697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984.

The product of its digits is 290304, while the sum is 42.

The square root of 64442697 is about 8027.6208804352. The cubic root of 64442697 is about 400.9201670251.

The spelling of 64442697 in words is "sixty-four million, four hundred forty-two thousand, six hundred ninety-seven".