63964374 has 16 divisors (see below), whose sum is σ = 134662080. Its totient is φ = 20199240.

The previous prime is 63964363. The next prime is 63964391. The reversal of 63964374 is 47346936.

It is a super-2 number, since 2×63964374² = 8182882282423752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280432 + ... + 280659.

It is an arithmetic number, because the mean of its divisors is an integer number (8416380).

Almost surely, 2^63964374 is an apocalyptic number.

63964374 is an abundant number, since it is smaller than the sum of its proper divisors (70697706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63964374 is a wasteful number, since it uses less digits than its factorization.

63964374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561115.

The product of its digits is 326592, while the sum is 42.

The square root of 63964374 is about 7997.7730650475. The cubic root of 63964374 is about 399.9257653906.

The spelling of 63964374 in words is "sixty-three million, nine hundred sixty-four thousand, three hundred seventy-four".