167216961 has 12 divisors (see below), whose sum is σ = 227253488. Its totient is φ = 109369104.

The previous prime is 167216911. The next prime is 167216989. The reversal of 167216961 is 169612761.

It is not a de Polignac number, because 167216961 - 2¹¹ = 167214913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (167216911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1495 + ... + 18348.

Almost surely, 2^167216961 is an apocalyptic number.

It is an amenable number.

167216961 is a deficient number, since it is larger than the sum of its proper divisors (60036527).

167216961 is an equidigital number, since it uses as much as digits as its factorization.

167216961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19952 (or 19899 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 167216961 is about 12931.2397317504. The cubic root of 167216961 is about 550.9262200523.

The spelling of 167216961 in words is "one hundred sixty-seven million, two hundred sixteen thousand, nine hundred sixty-one".