64704674517 has 16 divisors (see below), whose sum is σ = 101997517440. Its totient is φ = 35699130432.

The previous prime is 64704674483. The next prime is 64704674521. The reversal of 64704674517 is 71547640746.

It is a happy number.

It is not a de Polignac number, because 64704674517 - 2¹⁰ = 64704673493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64704674517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64704674557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53123098 + ... + 53124315.

It is an arithmetic number, because the mean of its divisors is an integer number (6374844840).

Almost surely, 2^64704674517 is an apocalyptic number.

It is an amenable number.

64704674517 is a deficient number, since it is larger than the sum of its proper divisors (37292842923).

64704674517 is a wasteful number, since it uses less digits than its factorization.

64704674517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106247452.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 64704674517 in words is "sixty-four billion, seven hundred four million, six hundred seventy-four thousand, five hundred seventeen".