172666376 has 16 divisors (see below), whose sum is σ = 340789200. Its totient is φ = 81789264.

The previous prime is 172666369. The next prime is 172666379. The reversal of 172666376 is 673666271.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (172666379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567830 + ... + 568133.

It is an arithmetic number, because the mean of its divisors is an integer number (21299325).

Almost surely, 2^172666376 is an apocalyptic number.

It is an amenable number.

172666376 is a deficient number, since it is larger than the sum of its proper divisors (168122824).

172666376 is a wasteful number, since it uses less digits than its factorization.

172666376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135988 (or 1135984 counting only the distinct ones).

The product of its digits is 381024, while the sum is 44.

The square root of 172666376 is about 13140.2578361309. The cubic root of 172666376 is about 556.8470517913.

The spelling of 172666376 in words is "one hundred seventy-two million, six hundred sixty-six thousand, three hundred seventy-six".