64256499 has 18 divisors (see below), whose sum is σ = 97859580. Its totient is φ = 40516848.

The previous prime is 64256483. The next prime is 64256501. The reversal of 64256499 is 99465246.

It is not a de Polignac number, because 64256499 - 2⁴ = 64256483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64256429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104517 + ... + 105129.

Almost surely, 2^64256499 is an apocalyptic number.

64256499 is a deficient number, since it is larger than the sum of its proper divisors (33603081).

64256499 is an equidigital number, since it uses as much as digits as its factorization.

64256499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 635 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 64256499 is about 8016.0151571713. The cubic root of 64256499 is about 400.5336606159.

The spelling of 64256499 in words is "sixty-four million, two hundred fifty-six thousand, four hundred ninety-nine".