172107765 has 12 divisors (see below), whose sum is σ = 298320204. Its totient is φ = 91790784.

The previous prime is 172107739. The next prime is 172107773. The reversal of 172107765 is 567701271.

172107765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 143784081 = 5322^2 + 11991^2 .

It is not a de Polignac number, because 172107765 - 2¹⁵ = 172074997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1912264 + ... + 1912353.

It is an arithmetic number, because the mean of its divisors is an integer number (24860017).

Almost surely, 2^172107765 is an apocalyptic number.

172107765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172107765 is a deficient number, since it is larger than the sum of its proper divisors (126212439).

172107765 is a wasteful number, since it uses less digits than its factorization.

172107765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824628 (or 3824625 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 172107765 is about 13118.9849073776. The cubic root of 172107765 is about 556.2458983833.

The spelling of 172107765 in words is "one hundred seventy-two million, one hundred seven thousand, seven hundred sixty-five".