172666676 has 24 divisors (see below), whose sum is σ = 371898240. Its totient is φ = 68307552.

The previous prime is 172666651. The next prime is 172666691. The reversal of 172666676 is 676666271.

172666676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 172666676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236816 + ... + 237543.

It is an arithmetic number, because the mean of its divisors is an integer number (15495760).

Almost surely, 2^172666676 is an apocalyptic number.

It is an amenable number.

172666676 is an abundant number, since it is smaller than the sum of its proper divisors (199231564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172666676 is a wasteful number, since it uses less digits than its factorization.

172666676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474383 (or 474381 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 172666676 is about 13140.2692514271. The cubic root of 172666676 is about 556.8473742900.

The spelling of 172666676 in words is "one hundred seventy-two million, six hundred sixty-six thousand, six hundred seventy-six".