63120664 has 8 divisors (see below), whose sum is σ = 118351260. Its totient is φ = 31560328.

The previous prime is 63120653. The next prime is 63120667. The reversal of 63120664 is 46602136.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63120667) by changing a digit.

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 as a sum of consecutive naturals, namely, 3945034 + ... + 3945049.

Almost surely, 2^63120664 is an apocalyptic number.

It is an amenable number.

63120664 is a deficient number, since it is larger than the sum of its proper divisors (55230596).

63120664 is a wasteful number, since it uses less digits than its factorization.

63120664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7890089 (or 7890085 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 63120664 is about 7944.8514145955. The cubic root of 63120664 is about 398.1595952627.

The spelling of 63120664 in words is "sixty-three million, one hundred twenty thousand, six hundred sixty-four".