64600000002 has 24 divisors (see below), whose sum is σ = 143749551036. Its totient is φ = 20951351136.

The previous prime is 64599999979. The next prime is 64600000007. The reversal of 64600000002 is 20000000646.

64600000002 is a `hidden beast` number, since 64 + 600 + 0 + 0 + 0 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59345344881 + 5254655121 = 243609^2 + 72489^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (64600000007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48497833 + ... + 48499164.

Almost surely, 2^64600000002 is an apocalyptic number.

64600000002 is an abundant number, since it is smaller than the sum of its proper divisors (79149551034).

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

64600000002 is a wasteful number, since it uses less digits than its factorization.

64600000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96997042 (or 96997039 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 64600000002 its reverse (20000000646), we get a palindrome (84600000648).

The spelling of 64600000002 in words is "sixty-four billion, six hundred million, two", and thus it is an aban number.