64698893699 has 4 divisors (see below), whose sum is σ = 70580611320. Its totient is φ = 58817176080.

The previous prime is 64698893683. The next prime is 64698893723. The reversal of 64698893699 is 99639889646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64698893699 - 2⁴ = 64698893683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64698853699) 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, 2940858794 + ... + 2940858815.

It is an arithmetic number, because the mean of its divisors is an integer number (17645152830).

Almost surely, 2^64698893699 is an apocalyptic number.

64698893699 is a deficient number, since it is larger than the sum of its proper divisors (5881717621).

64698893699 is a wasteful number, since it uses less digits than its factorization.

64698893699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881717620.

The product of its digits is 1088391168, while the sum is 77.

The spelling of 64698893699 in words is "sixty-four billion, six hundred ninety-eight million, eight hundred ninety-three thousand, six hundred ninety-nine".