669360231 has 24 divisors (see below), whose sum is σ = 997201920. Its totient is φ = 432398736.

The previous prime is 669360187. The next prime is 669360233. The reversal of 669360231 is 132063966.

669360231 = T₃₁₈₃ + T₃₁₈₄ + ... + T₃₃₀₉.

669360231 is a `hidden beast` number, since 6 + 69 + 360 + 231 = 666.

It is not a de Polignac number, because 669360231 - 2⁷ = 669360103 is a prime.

It is a super-2 number, since 2×669360231² = 896086237688746722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669360233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42340 + ... + 55958.

It is an arithmetic number, because the mean of its divisors is an integer number (41550080).

Almost surely, 2^669360231 is an apocalyptic number.

669360231 is a deficient number, since it is larger than the sum of its proper divisors (327841689).

669360231 is a wasteful number, since it uses less digits than its factorization.

669360231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13795 (or 13792 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 669360231 is about 25871.9970431353. The cubic root of 669360231 is about 874.7554063548.

The spelling of 669360231 in words is "six hundred sixty-nine million, three hundred sixty thousand, two hundred thirty-one".