172968895 has 24 divisors (see below), whose sum is σ = 234343872. Its totient is φ = 122379840.

The previous prime is 172968881. The next prime is 172968911. The reversal of 172968895 is 598869271.

It is not a de Polignac number, because 172968895 - 2¹¹ = 172966847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18522 + ... + 26248.

It is an arithmetic number, because the mean of its divisors is an integer number (9764328).

Almost surely, 2^172968895 is an apocalyptic number.

172968895 is a deficient number, since it is larger than the sum of its proper divisors (61374977).

172968895 is a wasteful number, since it uses less digits than its factorization.

172968895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7791 (or 7780 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 172968895 is about 13151.7639501323. The cubic root of 172968895 is about 557.1720688012.

The spelling of 172968895 in words is "one hundred seventy-two million, nine hundred sixty-eight thousand, eight hundred ninety-five".