172047668 has 12 divisors (see below), whose sum is σ = 324243780. Its totient is φ = 79406592.

The previous prime is 172047661. The next prime is 172047677. The reversal of 172047668 is 866740271.

It can be written as a sum of positive squares in 2 ways, for example, as 57942544 + 114105124 = 7612^2 + 10682^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172047661) 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, 1654253 + ... + 1654356.

It is an arithmetic number, because the mean of its divisors is an integer number (27020315).

Almost surely, 2^172047668 is an apocalyptic number.

It is an amenable number.

172047668 is a deficient number, since it is larger than the sum of its proper divisors (152196112).

172047668 is a wasteful number, since it uses less digits than its factorization.

172047668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308626 (or 3308624 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 172047668 is about 13116.6942481709. The cubic root of 172047668 is about 556.1811470894.

The spelling of 172047668 in words is "one hundred seventy-two million, forty-seven thousand, six hundred sixty-eight".