660363231 has 8 divisors (see below), whose sum is σ = 960528384. Its totient is φ = 400220120.

The previous prime is 660363167. The next prime is 660363251. The reversal of 660363231 is 132363066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660363231 - 2⁶ = 660363167 is a prime.

It is a super-2 number, since 2×660363231² = 872159193713518722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660363251) 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, 10005471 + ... + 10005536.

It is an arithmetic number, because the mean of its divisors is an integer number (120066048).

Almost surely, 2^660363231 is an apocalyptic number.

660363231 is a deficient number, since it is larger than the sum of its proper divisors (300165153).

660363231 is a wasteful number, since it uses less digits than its factorization.

660363231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011021.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 660363231 is about 25697.5335586900. The cubic root of 660363231 is about 870.8184621764.

The spelling of 660363231 in words is "six hundred sixty million, three hundred sixty-three thousand, two hundred thirty-one".