64662604002 has 72 divisors (see below), whose sum is σ = 145422449172. Its totient is φ = 20763216000.

The previous prime is 64662603989. The next prime is 64662604009. The reversal of 64662604002 is 20040626646.

64662604002 is a `hidden beast` number, since 6 + 46 + 6 + 2 + 604 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 64638486081 + 24117921 = 254241^2 + 4911^2 .

It is not an unprimeable number, because it can be changed into a prime (64662604009) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2475852 + ... + 2501832.

Almost surely, 2^64662604002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64662604002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72711224586).

64662604002 is an abundant number, since it is smaller than the sum of its proper divisors (80759845170).

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

64662604002 is a wasteful number, since it uses less digits than its factorization.

64662604002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26164 (or 26124 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 64662604002 in words is "sixty-four billion, six hundred sixty-two million, six hundred four thousand, two".