166460631 has 4 divisors (see below), whose sum is σ = 221947512. Its totient is φ = 110973752.

The previous prime is 166460627. The next prime is 166460641. The reversal of 166460631 is 136064661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136064661 = 3 ⋅45354887.

It is a cyclic number.

It is not a de Polignac number, because 166460631 - 2² = 166460627 is a prime.

It is a super-2 number, since 2×166460631² = 55418283345836322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166460592 and 166460601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166460641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27743436 + ... + 27743441.

It is an arithmetic number, because the mean of its divisors is an integer number (55486878).

Almost surely, 2^166460631 is an apocalyptic number.

166460631 is a deficient number, since it is larger than the sum of its proper divisors (55486881).

166460631 is an equidigital number, since it uses as much as digits as its factorization.

166460631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55486880.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 166460631 is about 12901.9622926127. The cubic root of 166460631 is about 550.0943430448.

The spelling of 166460631 in words is "one hundred sixty-six million, four hundred sixty thousand, six hundred thirty-one".