663312105 has 32 divisors (see below), whose sum is σ = 1192492800. Its totient is φ = 349785216.

The previous prime is 663312101. The next prime is 663312131. The reversal of 663312105 is 501213366.

663312105 is a `hidden beast` number, since 6 + 633 + 1 + 21 + 0 + 5 = 666.

It is not a de Polignac number, because 663312105 - 2² = 663312101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (663312101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15589 + ... + 39618.

It is an arithmetic number, because the mean of its divisors is an integer number (37265400).

Almost surely, 2^663312105 is an apocalyptic number.

It is an amenable number.

663312105 is a deficient number, since it is larger than the sum of its proper divisors (529180695).

663312105 is a wasteful number, since it uses less digits than its factorization.

663312105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55310 (or 55304 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 663312105 is about 25754.8462429889. The cubic root of 663312105 is about 872.1127604545.

The spelling of 663312105 in words is "six hundred sixty-three million, three hundred twelve thousand, one hundred five".