663477690 has 32 divisors (see below), whose sum is σ = 1593386496. Its totient is φ = 176811840.

The previous prime is 663477677. The next prime is 663477707. The reversal of 663477690 is 96774366.

It is a super-2 number, since 2×663477690² = 880405290255472200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45879 + ... + 58581.

It is an arithmetic number, because the mean of its divisors is an integer number (49793328).

Almost surely, 2^663477690 is an apocalyptic number.

663477690 is an abundant number, since it is smaller than the sum of its proper divisors (929908806).

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

663477690 is a wasteful number, since it uses less digits than its factorization.

663477690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 663477690 is about 25758.0606801056. The cubic root of 663477690 is about 872.1853239710.

The spelling of 663477690 in words is "six hundred sixty-three million, four hundred seventy-seven thousand, six hundred ninety".