166670677 has 2 divisors, whose sum is σ = 166670678. Its totient is φ = 166670676.

The previous prime is 166670657. The next prime is 166670683. The reversal of 166670677 is 776076661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98128836 + 68541841 = 9906^2 + 8279^2 .

It is a cyclic number.

It is not a de Polignac number, because 166670677 - 2⁷ = 166670549 is a prime.

It is a super-2 number, since 2×166670677² = 55558229143276658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166670657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83335338 + 83335339.

It is an arithmetic number, because the mean of its divisors is an integer number (83335339).

Almost surely, 2^166670677 is an apocalyptic number.

It is an amenable number.

166670677 is a deficient number, since it is larger than the sum of its proper divisors (1).

166670677 is an equidigital number, since it uses as much as digits as its factorization.

166670677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 46.

The square root of 166670677 is about 12910.0998059659. The cubic root of 166670677 is about 550.3256220567.

The spelling of 166670677 in words is "one hundred sixty-six million, six hundred seventy thousand, six hundred seventy-seven".