172660896 has 120 divisors (see below), whose sum is σ = 525529620. Its totient is φ = 55544832.

The previous prime is 172660883. The next prime is 172660913. The reversal of 172660896 is 698066271.

172660896 is a `hidden beast` number, since 17 + 26 + 608 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 172659600 + 1296 = 13140^2 + 36^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74020 + ... + 76316.

Almost surely, 2^172660896 is an apocalyptic number.

172660896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172660896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262764810).

172660896 is an abundant number, since it is smaller than the sum of its proper divisors (352868724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172660896 is a wasteful number, since it uses less digits than its factorization.

172660896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 172660896 is about 13140.0493149760. The cubic root of 172660896 is about 556.8411607503.

The spelling of 172660896 in words is "one hundred seventy-two million, six hundred sixty thousand, eight hundred ninety-six".