663522946 has 16 divisors (see below), whose sum is σ = 1038942720. Its totient is φ = 317449440.

The previous prime is 663522941. The next prime is 663522947. The reversal of 663522946 is 649225366.

It is not an unprimeable number, because it can be changed into a prime (663522941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54606 + ... + 65641.

It is an arithmetic number, because the mean of its divisors is an integer number (64933920).

Almost surely, 2^663522946 is an apocalyptic number.

663522946 is a deficient number, since it is larger than the sum of its proper divisors (375419774).

663522946 is a wasteful number, since it uses less digits than its factorization.

663522946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120369.

The product of its digits is 466560, while the sum is 43.

The square root of 663522946 is about 25758.9391474106. The cubic root of 663522946 is about 872.2051541890.

The spelling of 663522946 in words is "six hundred sixty-three million, five hundred twenty-two thousand, nine hundred forty-six".