166363631 has 8 divisors (see below), whose sum is σ = 190947744. Its totient is φ = 141984000.

The previous prime is 166363627. The next prime is 166363663. The reversal of 166363631 is 136363661.

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 166363631 - 2² = 166363627 is a prime.

It is a super-2 number, since 2×166363631² = 55353715439008322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166363591 and 166363600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166363931) 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, 49370 + ... + 52631.

It is an arithmetic number, because the mean of its divisors is an integer number (23868468).

Almost surely, 2^166363631 is an apocalyptic number.

166363631 is a deficient number, since it is larger than the sum of its proper divisors (24584113).

166363631 is a wasteful number, since it uses less digits than its factorization.

166363631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102241.

The product of its digits is 34992, while the sum is 35.

The square root of 166363631 is about 12898.2026267228. The cubic root of 166363631 is about 549.9874718909.

The spelling of 166363631 in words is "one hundred sixty-six million, three hundred sixty-three thousand, six hundred thirty-one".