663542830 has 16 divisors (see below), whose sum is σ = 1226658240. Its totient is φ = 258243552.

The previous prime is 663542819. The next prime is 663542839. The reversal of 663542830 is 38245366.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 663542830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663542839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896310 + ... + 897049.

It is an arithmetic number, because the mean of its divisors is an integer number (76666140).

Almost surely, 2^663542830 is an apocalyptic number.

663542830 is a deficient number, since it is larger than the sum of its proper divisors (563115410).

663542830 is a wasteful number, since it uses less digits than its factorization.

663542830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793403.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 663542830 is about 25759.3251076188. The cubic root of 663542830 is about 872.2138666503.

The spelling of 663542830 in words is "six hundred sixty-three million, five hundred forty-two thousand, eight hundred thirty".