361431666 has 32 divisors (see below), whose sum is σ = 829094400. Its totient is φ = 116590320.

The previous prime is 361431659. The next prime is 361431667. The reversal of 361431666 is 666134163.

It is a self number, because there is not a number n which added to its sum of digits gives 361431666.

It is not an unprimeable number, because it can be changed into a prime (361431667) 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, 106281 + ... + 109628.

It is an arithmetic number, because the mean of its divisors is an integer number (25909200).

Almost surely, 2^361431666 is an apocalyptic number.

361431666 is an abundant number, since it is smaller than the sum of its proper divisors (467662734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361431666 is a wasteful number, since it uses less digits than its factorization.

361431666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215951 (or 215945 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 361431666 is about 19011.3562377859. The cubic root of 361431666 is about 712.3204289848.

The spelling of 361431666 in words is "three hundred sixty-one million, four hundred thirty-one thousand, six hundred sixty-six".