172266673 has 12 divisors (see below), whose sum is σ = 182392320. Its totient is φ = 162678456.

The previous prime is 172266631. The next prime is 172266733. The reversal of 172266673 is 376662271.

It is a de Polignac number, because none of the positive numbers 2^k-172266673 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (172266613) 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 11 ways as a sum of consecutive naturals, for example, 157936 + ... + 159022.

It is an arithmetic number, because the mean of its divisors is an integer number (15199360).

Almost surely, 2^172266673 is an apocalyptic number.

It is an amenable number.

172266673 is a deficient number, since it is larger than the sum of its proper divisors (10125647).

172266673 is a wasteful number, since it uses less digits than its factorization.

172266673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1545 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 172266673 is about 13125.0399237488. The cubic root of 172266673 is about 556.4170406381.

The spelling of 172266673 in words is "one hundred seventy-two million, two hundred sixty-six thousand, six hundred seventy-three".