64706836698 has 72 divisors (see below), whose sum is σ = 167495878368. Its totient is φ = 17683837776.

The previous prime is 64706836693. The next prime is 64706836709. The reversal of 64706836698 is 89663860746.

64706836698 is a `hidden beast` number, since 64 + 70 + 68 + 366 + 98 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64706836693) 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, 418740 + ... + 552047.

It is an arithmetic number, because the mean of its divisors is an integer number (2326331644).

Almost surely, 2^64706836698 is an apocalyptic number.

64706836698 is an abundant number, since it is smaller than the sum of its proper divisors (102789041670).

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

64706836698 is a wasteful number, since it uses less digits than its factorization.

64706836698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970848 (or 970822 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 64706836698 in words is "sixty-four billion, seven hundred six million, eight hundred thirty-six thousand, six hundred ninety-eight".