63640012 has 12 divisors (see below), whose sum is σ = 111449520. Its totient is φ = 31797296.

The previous prime is 63639997. The next prime is 63640033. The reversal of 63640012 is 21004636.

63640012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63640012² = 8100102254720288, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1689 + ... + 11407.

It is an arithmetic number, because the mean of its divisors is an integer number (9287460).

Almost surely, 2^63640012 is an apocalyptic number.

It is an amenable number.

63640012 is a deficient number, since it is larger than the sum of its proper divisors (47809508).

63640012 is a wasteful number, since it uses less digits than its factorization.

63640012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360 (or 11358 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 63640012 is about 7977.4690221899. The cubic root of 63640012 is about 399.2486144331.

Adding to 63640012 its reverse (21004636), we get a palindrome (84644648).

The spelling of 63640012 in words is "sixty-three million, six hundred forty thousand, twelve".