172670537 has 16 divisors (see below), whose sum is σ = 198240000. Its totient is φ = 149071104.

The previous prime is 172670507. The next prime is 172670579. The reversal of 172670537 is 735076271.

172670537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172670537 - 2¹² = 172666441 is a prime.

It is a super-2 number, since 2×172670537² = 59630228695736738, 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 172670537.

It is not an unprimeable number, because it can be changed into a prime (172670507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15089 + ... + 23937.

It is an arithmetic number, because the mean of its divisors is an integer number (12390000).

Almost surely, 2^172670537 is an apocalyptic number.

It is an amenable number.

172670537 is a deficient number, since it is larger than the sum of its proper divisors (25569463).

172670537 is a wasteful number, since it uses less digits than its factorization.

172670537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960.

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 172670537 is about 13140.4161654036. The cubic root of 172670537 is about 556.8515248142.

The spelling of 172670537 in words is "one hundred seventy-two million, six hundred seventy thousand, five hundred thirty-seven".