663120139 has 16 divisors (see below), whose sum is σ = 773007840. Its totient is φ = 562152960.

The previous prime is 663120137. The next prime is 663120149. The reversal of 663120139 is 931021366.

It is a cyclic number.

It is not a de Polignac number, because 663120139 - 2¹ = 663120137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663120139.

It is not an unprimeable number, because it can be changed into a prime (663120137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4117 + ... + 36649.

It is an arithmetic number, because the mean of its divisors is an integer number (48312990).

Almost surely, 2^663120139 is an apocalyptic number.

663120139 is a deficient number, since it is larger than the sum of its proper divisors (109887701).

663120139 is a wasteful number, since it uses less digits than its factorization.

663120139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32670.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 663120139 is about 25751.1191795619. The cubic root of 663120139 is about 872.0286210025.

The spelling of 663120139 in words is "six hundred sixty-three million, one hundred twenty thousand, one hundred thirty-nine".