64680699 has 32 divisors (see below), whose sum is σ = 94818816. Its totient is φ = 39052800.

The previous prime is 64680689. The next prime is 64680713. The reversal of 64680699 is 99608646.

It is not a de Polignac number, because 64680699 - 2⁴ = 64680683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64680659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284824 + ... + 285050.

It is an arithmetic number, because the mean of its divisors is an integer number (2963088).

Almost surely, 2^64680699 is an apocalyptic number.

64680699 is a deficient number, since it is larger than the sum of its proper divisors (30138117).

64680699 is a wasteful number, since it uses less digits than its factorization.

64680699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 64680699 is about 8042.4311622792. The cubic root of 64680699 is about 401.4131247339.

The spelling of 64680699 in words is "sixty-four million, six hundred eighty thousand, six hundred ninety-nine".