1563690966 has 24 divisors (see below), whose sum is σ = 3214207080. Its totient is φ = 507140352.

The previous prime is 1563690913. The next prime is 1563690971. The reversal of 1563690966 is 6690963651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86971 + ... + 103398.

It is an arithmetic number, because the mean of its divisors is an integer number (133925295).

Almost surely, 2^1563690966 is an apocalyptic number.

1563690966 is an abundant number, since it is smaller than the sum of its proper divisors (1650516114).

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

1563690966 is a wasteful number, since it uses less digits than its factorization.

1563690966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190448 (or 190411 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 51.

The square root of 1563690966 is about 39543.5325432617. The cubic root of 1563690966 is about 1160.6919588338.

The spelling of 1563690966 in words is "one billion, five hundred sixty-three million, six hundred ninety thousand, nine hundred sixty-six".