63115566 has 16 divisors (see below), whose sum is σ = 130303488. Its totient is φ = 20359800.

The previous prime is 63115553. The next prime is 63115567. The reversal of 63115566 is 66551136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63115567) 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, 169480 + ... + 169851.

It is an arithmetic number, because the mean of its divisors is an integer number (8143968).

Almost surely, 2^63115566 is an apocalyptic number.

63115566 is an abundant number, since it is smaller than the sum of its proper divisors (67187922).

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

63115566 is a wasteful number, since it uses less digits than its factorization.

63115566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339367.

The product of its digits is 16200, while the sum is 33.

The square root of 63115566 is about 7944.5305714057. The cubic root of 63115566 is about 398.1488757289.

The spelling of 63115566 in words is "sixty-three million, one hundred fifteen thousand, five hundred sixty-six".