166660365 has 16 divisors (see below), whose sum is σ = 267408000. Its totient is φ = 88635072.

The previous prime is 166660349. The next prime is 166660379. The reversal of 166660365 is 563066661.

166660365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166660365 - 2⁴ = 166660349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10090 + ... + 20859.

It is an arithmetic number, because the mean of its divisors is an integer number (16713000).

Almost surely, 2^166660365 is an apocalyptic number.

166660365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166660365 is a deficient number, since it is larger than the sum of its proper divisors (100747635).

166660365 is a wasteful number, since it uses less digits than its factorization.

166660365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31316.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 166660365 is about 12909.7004225505. The cubic root of 166660365 is about 550.3142721801.

The spelling of 166660365 in words is "one hundred sixty-six million, six hundred sixty thousand, three hundred sixty-five".