63969380 has 24 divisors (see below), whose sum is σ = 137461632. Its totient is φ = 24992352.

The previous prime is 63969379. The next prime is 63969383. The reversal of 63969380 is 8396936.

It is not an unprimeable number, because it can be changed into a prime (63969383) 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, 36332 + ... + 38051.

It is an arithmetic number, because the mean of its divisors is an integer number (5727568).

Almost surely, 2^63969380 is an apocalyptic number.

It is an amenable number.

63969380 is an abundant number, since it is smaller than the sum of its proper divisors (73492252).

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

63969380 is a wasteful number, since it uses less digits than its factorization.

63969380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74435 (or 74433 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 63969380 is about 7998.0860210428. The cubic root of 63969380 is about 399.9361981572.

The spelling of 63969380 in words is "sixty-three million, nine hundred sixty-nine thousand, three hundred eighty".