63320820 has 24 divisors (see below), whose sum is σ = 177298464. Its totient is φ = 16885536.

The previous prime is 63320819. The next prime is 63320843. The reversal of 63320820 is 2802336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527614 + ... + 527733.

It is an arithmetic number, because the mean of its divisors is an integer number (7387436).

Almost surely, 2^63320820 is an apocalyptic number.

63320820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63320820 is an abundant number, since it is smaller than the sum of its proper divisors (113977644).

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

63320820 is a wasteful number, since it uses less digits than its factorization.

63320820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055359 (or 1055357 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 63320820 is about 7957.4380299189. The cubic root of 63320820 is about 398.5800066792.

The spelling of 63320820 in words is "sixty-three million, three hundred twenty thousand, eight hundred twenty".