63145566 has 24 divisors (see below), whose sum is σ = 149253624. Its totient is φ = 19134960.

The previous prime is 63145549. The next prime is 63145567. The reversal of 63145566 is 66554136.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63145566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63145567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159261 + ... + 159656.

It is an arithmetic number, because the mean of its divisors is an integer number (6218901).

Almost surely, 2^63145566 is an apocalyptic number.

63145566 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

63145566 is an abundant number, since it is smaller than the sum of its proper divisors (86108058).

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

63145566 is a wasteful number, since it uses less digits than its factorization.

63145566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318936 (or 318933 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 63145566 is about 7946.4184385168. The cubic root of 63145566 is about 398.2119482537.

The spelling of 63145566 in words is "sixty-three million, one hundred forty-five thousand, five hundred sixty-six".