63397768 has 24 divisors (see below), whose sum is σ = 138279150. Its totient is φ = 27170304.

The previous prime is 63397723. The next prime is 63397769. The reversal of 63397768 is 86779336.

It can be written as a sum of positive squares in only one way, i.e., 52388644 + 11009124 = 7238^2 + 3318^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (63397769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80473 + ... + 81256.

Almost surely, 2^63397768 is an apocalyptic number.

It is an amenable number.

63397768 is an abundant number, since it is smaller than the sum of its proper divisors (74881382).

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

63397768 is a wasteful number, since it uses less digits than its factorization.

63397768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161749 (or 161738 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 49.

The square root of 63397768 is about 7962.2715351839. The cubic root of 63397768 is about 398.7413939305.

The spelling of 63397768 in words is "sixty-three million, three hundred ninety-seven thousand, seven hundred sixty-eight".