63975408 has 40 divisors (see below), whose sum is σ = 188880768. Its totient is φ = 18278592.

The previous prime is 63975383. The next prime is 63975409. The reversal of 63975408 is 80457936.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 63975408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63975409) 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, 94866 + ... + 95537.

Almost surely, 2^63975408 is an apocalyptic number.

It is an amenable number.

63975408 is an abundant number, since it is smaller than the sum of its proper divisors (124905360).

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

63975408 is a wasteful number, since it uses less digits than its factorization.

63975408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190421 (or 190415 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 63975408 is about 7998.4628523236. The cubic root of 63975408 is about 399.9487601031.

The spelling of 63975408 in words is "sixty-three million, nine hundred seventy-five thousand, four hundred eight".