63420656 has 20 divisors (see below), whose sum is σ = 132330072. Its totient is φ = 29270976.

The previous prime is 63420653. The next prime is 63420673. The reversal of 63420656 is 65602436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63420653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152246 + ... + 152661.

Almost surely, 2^63420656 is an apocalyptic number.

It is an amenable number.

63420656 is an abundant number, since it is smaller than the sum of its proper divisors (68909416).

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

63420656 is a wasteful number, since it uses less digits than its factorization.

63420656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304928 (or 304922 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 63420656 is about 7963.7086837729. The cubic root of 63420656 is about 398.7893729854.

The spelling of 63420656 in words is "sixty-three million, four hundred twenty thousand, six hundred fifty-six".