663308190 has 80 divisors (see below), whose sum is σ = 1793225808. Its totient is φ = 175924224.

The previous prime is 663308167. The next prime is 663308203. The reversal of 663308190 is 91803366.

It is a happy number.

663308190 is a `hidden beast` number, since 6 + 633 + 0 + 8 + 19 + 0 = 666.

It is a super-2 number, since 2×663308190² = 879955509842152200, which contains 22 as substring.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 154209 + ... + 158451.

Almost surely, 2^663308190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663308190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896612904).

663308190 is an abundant number, since it is smaller than the sum of its proper divisors (1129917618).

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

663308190 is a wasteful number, since it uses less digits than its factorization.

663308190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455 (or 4446 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 663308190 is about 25754.7702377637. The cubic root of 663308190 is about 872.1110446568. Note that the first 3 decimals are identical.

The spelling of 663308190 in words is "six hundred sixty-three million, three hundred eight thousand, one hundred ninety".