64677203252 has 12 divisors (see below), whose sum is σ = 117088040580. Its totient is φ = 31223477376.

The previous prime is 64677203243. The next prime is 64677203257. The reversal of 64677203252 is 25230277646.

It can be written as a sum of positive squares in 2 ways, for example, as 21478074916 + 43199128336 = 146554^2 + 207844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64677203257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278780933 + ... + 278781164.

It is an arithmetic number, because the mean of its divisors is an integer number (9757336715).

Almost surely, 2^64677203252 is an apocalyptic number.

It is an amenable number.

64677203252 is a deficient number, since it is larger than the sum of its proper divisors (52410837328).

64677203252 is a wasteful number, since it uses less digits than its factorization.

64677203252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557562130 (or 557562128 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 44.

The spelling of 64677203252 in words is "sixty-four billion, six hundred seventy-seven million, two hundred three thousand, two hundred fifty-two".