172980719 has 4 divisors (see below), whose sum is σ = 173624040. Its totient is φ = 172337400.

The previous prime is 172980707. The next prime is 172980733. The reversal of 172980719 is 917089271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172980719 - 2⁸ = 172980463 is a prime.

It is a super-2 number, since 2×172980719² = 59844658291513922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172980719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172980749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321257 + ... + 321794.

It is an arithmetic number, because the mean of its divisors is an integer number (43406010).

Almost surely, 2^172980719 is an apocalyptic number.

172980719 is a deficient number, since it is larger than the sum of its proper divisors (643321).

172980719 is an equidigital number, since it uses as much as digits as its factorization.

172980719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643320.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 172980719 is about 13152.2134639003. The cubic root of 172980719 is about 557.1847644411.

The spelling of 172980719 in words is "one hundred seventy-two million, nine hundred eighty thousand, seven hundred nineteen".