63958660 has 24 divisors (see below), whose sum is σ = 135175320. Its totient is φ = 25419264.

The previous prime is 63958633. The next prime is 63958663. The reversal of 63958660 is 6685936.

It can be written as a sum of positive squares in 4 ways, for example, as 6471936 + 57486724 = 2544^2 + 7582^2 .

It is not an unprimeable number, because it can be changed into a prime (63958663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7045 + ... + 13324.

It is an arithmetic number, because the mean of its divisors is an integer number (5632305).

Almost surely, 2^63958660 is an apocalyptic number.

It is an amenable number.

63958660 is an abundant number, since it is smaller than the sum of its proper divisors (71216660).

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

63958660 is a wasteful number, since it uses less digits than its factorization.

63958660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20535 (or 20533 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 63958660 is about 7997.4158326299. The cubic root of 63958660 is about 399.9138564496.

The spelling of 63958660 in words is "sixty-three million, nine hundred fifty-eight thousand, six hundred sixty".