64099387 has 6 divisors (see below), whose sum is σ = 70456484. Its totient is φ = 58272060.

The previous prime is 64099381. The next prime is 64099393. The reversal of 64099387 is 78399046.

64099387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64099381) and next prime (64099393).

It is not a de Polignac number, because 64099387 - 2³ = 64099379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64099381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264753 + ... + 264994.

Almost surely, 2^64099387 is an apocalyptic number.

64099387 is a deficient number, since it is larger than the sum of its proper divisors (6357097).

64099387 is a wasteful number, since it uses less digits than its factorization.

64099387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529769 (or 529758 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 64099387 is about 8006.2092778043. The cubic root of 64099387 is about 400.2069491616.

The spelling of 64099387 in words is "sixty-four million, ninety-nine thousand, three hundred eighty-seven".