231677666 has 48 divisors (see below), whose sum is σ = 419979168. Its totient is φ = 94723200.

The previous prime is 231677657. The next prime is 231677701. The reversal of 231677666 is 666776132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197261 + ... + 198431.

It is an arithmetic number, because the mean of its divisors is an integer number (8749566).

Almost surely, 2^231677666 is an apocalyptic number.

231677666 is a deficient number, since it is larger than the sum of its proper divisors (188301502).

231677666 is a wasteful number, since it uses less digits than its factorization.

231677666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1224 counting only the distinct ones).

The product of its digits is 381024, while the sum is 44.

The square root of 231677666 is about 15220.9614019614. The cubic root of 231677666 is about 614.1786607800.

The spelling of 231677666 in words is "two hundred thirty-one million, six hundred seventy-seven thousand, six hundred sixty-six".