64424308 has 24 divisors (see below), whose sum is σ = 121874760. Its totient is φ = 29621760.

The previous prime is 64424303. The next prime is 64424317. The reversal of 64424308 is 80342446.

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 64352484 = 268^2 + 8022^2 .

It is a super-2 number, since 2×64424308² = 8300982922557728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64424308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64424303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12408 + ... + 16816.

It is an arithmetic number, because the mean of its divisors is an integer number (5078115).

Almost surely, 2^64424308 is an apocalyptic number.

It is an amenable number.

64424308 is a deficient number, since it is larger than the sum of its proper divisors (57450452).

64424308 is a wasteful number, since it uses less digits than its factorization.

64424308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707 (or 4705 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 64424308 is about 8026.4754406900. The cubic root of 64424308 is about 400.8820286341.

The spelling of 64424308 in words is "sixty-four million, four hundred twenty-four thousand, three hundred eight".