166660461 has 48 divisors (see below), whose sum is σ = 279407232. Its totient is φ = 94723200.

The previous prime is 166660447. The next prime is 166660463. The reversal of 166660461 is 164066661.

It is not a de Polignac number, because 166660461 - 2⁶ = 166660397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166660463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119991 + ... + 121371.

It is an arithmetic number, because the mean of its divisors is an integer number (5820984).

Almost surely, 2^166660461 is an apocalyptic number.

166660461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166660461 is a deficient number, since it is larger than the sum of its proper divisors (112746771).

166660461 is a wasteful number, since it uses less digits than its factorization.

166660461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 166660461 is about 12909.7041406842. The cubic root of 166660461 is about 550.3143778444.

The spelling of 166660461 in words is "one hundred sixty-six million, six hundred sixty thousand, four hundred sixty-one".