663252554 has 16 divisors (see below), whose sum is σ = 1027543968. Its totient is φ = 320882352.

The previous prime is 663252553. The next prime is 663252563. The reversal of 663252554 is 455252366.

It is not an unprimeable number, because it can be changed into a prime (663252553) 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, 26837 + ... + 45240.

It is an arithmetic number, because the mean of its divisors is an integer number (64221498).

Almost surely, 2^663252554 is an apocalyptic number.

663252554 is a deficient number, since it is larger than the sum of its proper divisors (364291414).

663252554 is a wasteful number, since it uses less digits than its factorization.

663252554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72229.

The product of its digits is 216000, while the sum is 38.

The square root of 663252554 is about 25753.6901045268. The cubic root of 663252554 is about 872.0866607543.

The spelling of 663252554 in words is "six hundred sixty-three million, two hundred fifty-two thousand, five hundred fifty-four".