64263879 has 12 divisors (see below), whose sum is σ = 93694536. Its totient is φ = 42441552.

The previous prime is 64263877. The next prime is 64263889. The reversal of 64263879 is 97836246.

64263879 is a `hidden beast` number, since 6 + 4 + 2 + 638 + 7 + 9 = 666.

It is not a de Polignac number, because 64263879 - 2¹ = 64263877 is a prime.

It is a super-2 number, since 2×64263879² = 8259692288253282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64263877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32404 + ... + 34329.

It is an arithmetic number, because the mean of its divisors is an integer number (7807878).

Almost surely, 2^64263879 is an apocalyptic number.

64263879 is a deficient number, since it is larger than the sum of its proper divisors (29430657).

64263879 is a wasteful number, since it uses less digits than its factorization.

64263879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66846 (or 66843 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64263879 is about 8016.4754724255. The cubic root of 64263879 is about 400.5489940857.

The spelling of 64263879 in words is "sixty-four million, two hundred sixty-three thousand, eight hundred seventy-nine".