63499120 has 20 divisors (see below), whose sum is σ = 147635640. Its totient is φ = 25399616.

The previous prime is 63499091. The next prime is 63499127. The reversal of 63499120 is 2199436.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63499127) 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, 396790 + ... + 396949.

It is an arithmetic number, because the mean of its divisors is an integer number (7381782).

Almost surely, 2^63499120 is an apocalyptic number.

It is an amenable number.

63499120 is an abundant number, since it is smaller than the sum of its proper divisors (84136520).

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

63499120 is a wasteful number, since it uses less digits than its factorization.

63499120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793752 (or 793746 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 63499120 is about 7968.6335089525. The cubic root of 63499120 is about 398.9537658712.

The spelling of 63499120 in words is "sixty-three million, four hundred ninety-nine thousand, one hundred twenty".