64664698 has 16 divisors (see below), whose sum is σ = 114430464. Its totient is φ = 26819280.

The previous prime is 64664687. The next prime is 64664711. The reversal of 64664698 is 89646646.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74065 + ... + 74932.

It is an arithmetic number, because the mean of its divisors is an integer number (7151904).

Almost surely, 2^64664698 is an apocalyptic number.

64664698 is a deficient number, since it is larger than the sum of its proper divisors (49765766).

64664698 is a wasteful number, since it uses less digits than its factorization.

64664698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149037.

The product of its digits is 1492992, while the sum is 49.

The square root of 64664698 is about 8041.4363144901. The cubic root of 64664698 is about 401.3800208805.

The spelling of 64664698 in words is "sixty-four million, six hundred sixty-four thousand, six hundred ninety-eight".