166745860 has 48 divisors (see below), whose sum is σ = 386902656. Its totient is φ = 60042752.

The previous prime is 166745857. The next prime is 166745863. The reversal of 166745860 is 68547661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166745857) and next prime (166745863).

It is not an unprimeable number, because it can be changed into a prime (166745863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2842 + ... + 18481.

It is an arithmetic number, because the mean of its divisors is an integer number (8060472).

Almost surely, 2^166745860 is an apocalyptic number.

166745860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166745860 is an abundant number, since it is smaller than the sum of its proper divisors (220156796).

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

166745860 is a wasteful number, since it uses less digits than its factorization.

166745860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21372 (or 21370 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 166745860 is about 12913.0112677098. The cubic root of 166745860 is about 550.4083578890.

The spelling of 166745860 in words is "one hundred sixty-six million, seven hundred forty-five thousand, eight hundred sixty".