669574831 has 8 divisors (see below), whose sum is σ = 684198144. Its totient is φ = 654967320.

The previous prime is 669574783. The next prime is 669574837. The reversal of 669574831 is 138475966.

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 669574831 - 2¹⁷ = 669443759 is a prime.

It is a super-2 number, since 2×669574831² = 896660908617357122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669574837) 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 7 ways as a sum of consecutive naturals, for example, 131116 + ... + 136126.

It is an arithmetic number, because the mean of its divisors is an integer number (85524768).

Almost surely, 2^669574831 is an apocalyptic number.

669574831 is a deficient number, since it is larger than the sum of its proper divisors (14623313).

669574831 is a wasteful number, since it uses less digits than its factorization.

669574831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901.

The product of its digits is 1088640, while the sum is 49.

The square root of 669574831 is about 25876.1440520028. The cubic root of 669574831 is about 874.8488799154.

The spelling of 669574831 in words is "six hundred sixty-nine million, five hundred seventy-four thousand, eight hundred thirty-one".