160666631 has 4 divisors (see below), whose sum is σ = 160719792. Its totient is φ = 160613472.

The previous prime is 160666607. The next prime is 160666637. The reversal of 160666631 is 136666061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136666061 = 7 ⋅19523723.

It is a cyclic number.

It is not a de Polignac number, because 160666631 - 2¹⁸ = 160404487 is a prime.

It is a super-2 number, since 2×160666631² = 51627532633780322, 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 = 160666591 and 160666600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160666637) 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, 21755 + ... + 28188.

It is an arithmetic number, because the mean of its divisors is an integer number (40179948).

Almost surely, 2^160666631 is an apocalyptic number.

160666631 is a deficient number, since it is larger than the sum of its proper divisors (53161).

160666631 is an equidigital number, since it uses as much as digits as its factorization.

160666631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53160.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 160666631 is about 12675.4341543002. The cubic root of 160666631 is about 543.6364431733.

The spelling of 160666631 in words is "one hundred sixty million, six hundred sixty-six thousand, six hundred thirty-one".