166416279 has 8 divisors (see below), whose sum is σ = 222142080. Its totient is φ = 110817336.

The previous prime is 166416259. The next prime is 166416301. The reversal of 166416279 is 972614661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166416279 - 2²³ = 158027671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166416279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166416209) 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, 28609 + ... + 33930.

It is an arithmetic number, because the mean of its divisors is an integer number (27767760).

Almost surely, 2^166416279 is an apocalyptic number.

166416279 is a deficient number, since it is larger than the sum of its proper divisors (55725801).

166416279 is an equidigital number, since it uses as much as digits as its factorization.

166416279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63429.

The product of its digits is 108864, while the sum is 42.

The square root of 166416279 is about 12900.2433697973. The cubic root of 166416279 is about 550.0454827400.

The spelling of 166416279 in words is "one hundred sixty-six million, four hundred sixteen thousand, two hundred seventy-nine".