663369290 has 16 divisors (see below), whose sum is σ = 1194357960. Its totient is φ = 265282560.

The previous prime is 663369281. The next prime is 663369349. The reversal of 663369290 is 92963366.

It can be written as a sum of positive squares in 4 ways, for example, as 319229689 + 344139601 = 17867^2 + 18551^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76706 + ... + 84914.

Almost surely, 2^663369290 is an apocalyptic number.

663369290 is a deficient number, since it is larger than the sum of its proper divisors (530988670).

663369290 is a wasteful number, since it uses less digits than its factorization.

663369290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16297.

The product of its (nonzero) digits is 314928, while the sum is 44.

The square root of 663369290 is about 25755.9563984722. The cubic root of 663369290 is about 872.1378217264.

The spelling of 663369290 in words is "six hundred sixty-three million, three hundred sixty-nine thousand, two hundred ninety".