63461920 has 24 divisors (see below), whose sum is σ = 149929164. Its totient is φ = 25384704.

The previous prime is 63461911. The next prime is 63461921. The reversal of 63461920 is 2916436.

It can be written as a sum of positive squares in 2 ways, for example, as 60652944 + 2808976 = 7788^2 + 1676^2 .

It is not an unprimeable number, because it can be changed into a prime (63461921) 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, 198159 + ... + 198478.

Almost surely, 2^63461920 is an apocalyptic number.

It is an amenable number.

63461920 is an abundant number, since it is smaller than the sum of its proper divisors (86467244).

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

63461920 is a wasteful number, since it uses less digits than its factorization.

63461920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396652 (or 396644 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 63461920 is about 7966.2990152266. The cubic root of 63461920 is about 398.8758436408.

The spelling of 63461920 in words is "sixty-three million, four hundred sixty-one thousand, nine hundred twenty".