63864572 has 6 divisors (see below), whose sum is σ = 111763008. Its totient is φ = 31932284.

The previous prime is 63864569. The next prime is 63864611. The reversal of 63864572 is 27546836.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7983068 + ... + 7983075.

It is an arithmetic number, because the mean of its divisors is an integer number (18627168).

Almost surely, 2^63864572 is an apocalyptic number.

It is an amenable number.

63864572 is a deficient number, since it is larger than the sum of its proper divisors (47898436).

63864572 is a wasteful number, since it uses less digits than its factorization.

63864572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15966147 (or 15966145 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 63864572 is about 7991.5312675357. The cubic root of 63864572 is about 399.7176590892.

The spelling of 63864572 in words is "sixty-three million, eight hundred sixty-four thousand, five hundred seventy-two".