64705698436 has 12 divisors (see below), whose sum is σ = 115644227328. Its totient is φ = 31664490632.

The previous prime is 64705698433. The next prime is 64705698443. The reversal of 64705698436 is 63489650746.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64705698433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172089436 + ... + 172089811.

It is an arithmetic number, because the mean of its divisors is an integer number (9637018944).

Almost surely, 2^64705698436 is an apocalyptic number.

It is an amenable number.

64705698436 is a deficient number, since it is larger than the sum of its proper divisors (50938528892).

64705698436 is a wasteful number, since it uses less digits than its factorization.

64705698436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344179298 (or 344179296 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 64705698436 in words is "sixty-four billion, seven hundred five million, six hundred ninety-eight thousand, four hundred thirty-six".