166422465 has 32 divisors (see below), whose sum is σ = 322761600. Its totient is φ = 80688960.

The previous prime is 166422449. The next prime is 166422467. The reversal of 166422465 is 564224661.

166422465 is a `hidden beast` number, since 1 + 6 + 642 + 2 + 4 + 6 + 5 = 666.

It is not a de Polignac number, because 166422465 - 2⁴ = 166422449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166422467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54550 + ... + 57519.

It is an arithmetic number, because the mean of its divisors is an integer number (10086300).

Almost surely, 2^166422465 is an apocalyptic number.

166422465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166422465 is a deficient number, since it is larger than the sum of its proper divisors (156339135).

166422465 is a wasteful number, since it uses less digits than its factorization.

166422465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112094 (or 112088 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 166422465 is about 12900.4831304878. The cubic root of 166422465 is about 550.0522980573.

It can be divided in two parts, 1 and 66422465, that added together give a palindrome (66422466).

The spelling of 166422465 in words is "one hundred sixty-six million, four hundred twenty-two thousand, four hundred sixty-five".