64644932606 has 32 divisors (see below), whose sum is σ = 105670863360. Its totient is φ = 29559162816.

The previous prime is 64644932563. The next prime is 64644932629. The reversal of 64644932606 is 60623944646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117536 + ... + 378291.

It is an arithmetic number, because the mean of its divisors is an integer number (3302214480).

Almost surely, 2^64644932606 is an apocalyptic number.

64644932606 is a deficient number, since it is larger than the sum of its proper divisors (41025930754).

64644932606 is a wasteful number, since it uses less digits than its factorization.

64644932606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495968.

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 64644932606 in words is "sixty-four billion, six hundred forty-four million, nine hundred thirty-two thousand, six hundred six".