64599983 has 12 divisors (see below), whose sum is σ = 79568352. Its totient is φ = 52113600.

The previous prime is 64599973. The next prime is 64600007. The reversal of 64599983 is 38999546.

It is not a de Polignac number, because 64599983 - 2⁴ = 64599967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64599923) 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 11 ways as a sum of consecutive naturals, for example, 37943 + ... + 39608.

It is an arithmetic number, because the mean of its divisors is an integer number (6630696).

Almost surely, 2^64599983 is an apocalyptic number.

64599983 is a deficient number, since it is larger than the sum of its proper divisors (14968369).

64599983 is a wasteful number, since it uses less digits than its factorization.

64599983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77582 (or 77575 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 53.

The square root of 64599983 is about 8037.4114614097. The cubic root of 64599983 is about 401.2460787717.

The spelling of 64599983 in words is "sixty-four million, five hundred ninety-nine thousand, nine hundred eighty-three".