166913677 has 4 divisors (see below), whose sum is σ = 190758496. Its totient is φ = 143068860.

The previous prime is 166913671. The next prime is 166913713. The reversal of 166913677 is 776319661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776319661 = 13 ⋅59716897.

It is a cyclic number.

It is not a de Polignac number, because 166913677 - 2¹¹ = 166911629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166913671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11922399 + ... + 11922412.

It is an arithmetic number, because the mean of its divisors is an integer number (47689624).

Almost surely, 2^166913677 is an apocalyptic number.

It is an amenable number.

166913677 is a deficient number, since it is larger than the sum of its proper divisors (23844819).

166913677 is an equidigital number, since it uses as much as digits as its factorization.

166913677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23844818.

The product of its digits is 285768, while the sum is 46.

The square root of 166913677 is about 12919.5076144565. The cubic root of 166913677 is about 550.5929440003.

The spelling of 166913677 in words is "one hundred sixty-six million, nine hundred thirteen thousand, six hundred seventy-seven".