63557412 has 12 divisors (see below), whose sum is σ = 148300656. Its totient is φ = 21185800.

The previous prime is 63557393. The next prime is 63557477. The reversal of 63557412 is 21475536.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648214 + ... + 2648237.

It is an arithmetic number, because the mean of its divisors is an integer number (12358388).

Almost surely, 2^63557412 is an apocalyptic number.

It is an amenable number.

63557412 is an abundant number, since it is smaller than the sum of its proper divisors (84743244).

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

63557412 is a wasteful number, since it uses less digits than its factorization.

63557412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296458 (or 5296456 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 63557412 is about 7972.2902606466. The cubic root of 63557412 is about 399.0758079840.

The spelling of 63557412 in words is "sixty-three million, five hundred fifty-seven thousand, four hundred twelve".