64438012 has 6 divisors (see below), whose sum is σ = 112766528. Its totient is φ = 32219004.

The previous prime is 64438001. The next prime is 64438013. The reversal of 64438012 is 21083446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64438013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8054748 + ... + 8054755.

Almost surely, 2^64438012 is an apocalyptic number.

It is an amenable number.

64438012 is a deficient number, since it is larger than the sum of its proper divisors (48328516).

64438012 is a wasteful number, since it uses less digits than its factorization.

64438012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16109507 (or 16109505 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 64438012 is about 8027.3290701204. The cubic root of 64438012 is about 400.9104511246.

The spelling of 64438012 in words is "sixty-four million, four hundred thirty-eight thousand, twelve".