173138660 has 12 divisors (see below), whose sum is σ = 363591228. Its totient is φ = 69255456.

The previous prime is 173138657. The next prime is 173138663. The reversal of 173138660 is 66831371.

It is an interprime number because it is at equal distance from previous prime (173138657) and next prime (173138663).

It can be written as a sum of positive squares in 2 ways, for example, as 32194276 + 140944384 = 5674^2 + 11872^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 173138660.

It is not an unprimeable number, because it can be changed into a prime (173138663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328447 + ... + 4328486.

It is an arithmetic number, because the mean of its divisors is an integer number (30299269).

Almost surely, 2^173138660 is an apocalyptic number.

173138660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

173138660 is an abundant number, since it is smaller than the sum of its proper divisors (190452568).

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

173138660 is a wasteful number, since it uses less digits than its factorization.

173138660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8656942 (or 8656940 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 173138660 is about 13158.2164444882. The cubic root of 173138660 is about 557.3542930631.

The spelling of 173138660 in words is "one hundred seventy-three million, one hundred thirty-eight thousand, six hundred sixty".