172275687 has 8 divisors (see below), whose sum is σ = 255223280. Its totient is φ = 114850440.

The previous prime is 172275667. The next prime is 172275707. The reversal of 172275687 is 786572271.

It is an interprime number because it is at equal distance from previous prime (172275667) and next prime (172275707).

It is not a de Polignac number, because 172275687 - 2¹¹ = 172273639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172275647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3190264 + ... + 3190317.

It is an arithmetic number, because the mean of its divisors is an integer number (31902910).

Almost surely, 2^172275687 is an apocalyptic number.

172275687 is a deficient number, since it is larger than the sum of its proper divisors (82947593).

172275687 is an equidigital number, since it uses as much as digits as its factorization.

172275687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380590 (or 6380584 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 172275687 is about 13125.3833086886. The cubic root of 172275687 is about 556.4267454669.

The spelling of 172275687 in words is "one hundred seventy-two million, two hundred seventy-five thousand, six hundred eighty-seven".