166979097 has 16 divisors (see below), whose sum is σ = 252046080. Its totient is φ = 109218096.

The previous prime is 166979093. The next prime is 166979107. The reversal of 166979097 is 790979661.

It is not a de Polignac number, because 166979097 - 2² = 166979093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166979093) 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, 56913 + ... + 59774.

It is an arithmetic number, because the mean of its divisors is an integer number (15752880).

Almost surely, 2^166979097 is an apocalyptic number.

It is an amenable number.

166979097 is a deficient number, since it is larger than the sum of its proper divisors (85066983).

166979097 is a wasteful number, since it uses less digits than its factorization.

166979097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116749 (or 116743 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 166979097 is about 12922.0391966593. The cubic root of 166979097 is about 550.6648675762.

The spelling of 166979097 in words is "one hundred sixty-six million, nine hundred seventy-nine thousand, ninety-seven".