64635607323 has 36 divisors (see below), whose sum is σ = 108655616160. Its totient is φ = 36917558496.

The previous prime is 64635607297. The next prime is 64635607369. The reversal of 64635607323 is 32370653646.

64635607323 is a `hidden beast` number, since 6 + 4 + 6 + 3 + 5 + 607 + 32 + 3 = 666.

It is not a de Polignac number, because 64635607323 - 2⁹ = 64635606811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64635607523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 953758 + ... + 1019276.

It is an arithmetic number, because the mean of its divisors is an integer number (3018211560).

Almost surely, 2^64635607323 is an apocalyptic number.

64635607323 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64635607323 is a deficient number, since it is larger than the sum of its proper divisors (44020008837).

64635607323 is a wasteful number, since it uses less digits than its factorization.

64635607323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67776 (or 67766 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 45.

The spelling of 64635607323 in words is "sixty-four billion, six hundred thirty-five million, six hundred seven thousand, three hundred twenty-three".