663650156 has 18 divisors (see below), whose sum is σ = 1257598692. Its totient is φ = 306299760.

The previous prime is 663650129. The next prime is 663650159. The reversal of 663650156 is 651056366.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (663650159) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 490190 + ... + 491541.

It is an arithmetic number, because the mean of its divisors is an integer number (69866594).

Almost surely, 2^663650156 is an apocalyptic number.

It is an amenable number.

663650156 is a deficient number, since it is larger than the sum of its proper divisors (593948536).

663650156 is a wasteful number, since it uses less digits than its factorization.

663650156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981761 (or 981746 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 663650156 is about 25761.4082689592. The cubic root of 663650156 is about 872.2608900800.

The spelling of 663650156 in words is "six hundred sixty-three million, six hundred fifty thousand, one hundred fifty-six".