172370085 has 8 divisors (see below), whose sum is σ = 275792160. Its totient is φ = 91930704.

The previous prime is 172370059. The next prime is 172370111. The reversal of 172370085 is 580073271.

It is an interprime number because it is at equal distance from previous prime (172370059) and next prime (172370111).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172370085 - 2¹⁶ = 172304549 is a prime.

It is a super-2 number, since 2×172370085² = 59422892405814450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5745655 + ... + 5745684.

It is an arithmetic number, because the mean of its divisors is an integer number (34474020).

Almost surely, 2^172370085 is an apocalyptic number.

172370085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172370085 is a deficient number, since it is larger than the sum of its proper divisors (103422075).

172370085 is a wasteful number, since it uses less digits than its factorization.

172370085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491347.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 172370085 is about 13128.9788254837. The cubic root of 172370085 is about 556.5283577567.

The spelling of 172370085 in words is "one hundred seventy-two million, three hundred seventy thousand, eighty-five".