172050660 has 72 divisors (see below), whose sum is σ = 522969720. Its totient is φ = 45785088.

The previous prime is 172050631. The next prime is 172050673. The reversal of 172050660 is 66050271.

It can be written as a sum of positive squares in 4 ways, for example, as 41679936 + 130370724 = 6456^2 + 11418^2 .

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, 148644 + ... + 149796.

Almost surely, 2^172050660 is an apocalyptic number.

172050660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172050660 is an abundant number, since it is smaller than the sum of its proper divisors (350919060).

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

172050660 is a wasteful number, since it uses less digits than its factorization.

172050660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 172050660 is about 13116.8083008024. The cubic root of 172050660 is about 556.1843711655.

The spelling of 172050660 in words is "one hundred seventy-two million, fifty thousand, six hundred sixty".