166265460 has 72 divisors (see below), whose sum is σ = 523033056. Its totient is φ = 44336160.

The previous prime is 166265441. The next prime is 166265467. The reversal of 166265460 is 64562661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166265467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12246 + ... + 21965.

It is an arithmetic number, because the mean of its divisors is an integer number (7264348).

Almost surely, 2^166265460 is an apocalyptic number.

166265460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166265460 is an abundant number, since it is smaller than the sum of its proper divisors (356767596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166265460 is a wasteful number, since it uses less digits than its factorization.

166265460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34235 (or 34221 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 166265460 is about 12894.3964573764. The cubic root of 166265460 is about 549.8792682657.

The spelling of 166265460 in words is "one hundred sixty-six million, two hundred sixty-five thousand, four hundred sixty".