172065620 has 48 divisors (see below), whose sum is σ = 368903808. Its totient is φ = 67401600.

The previous prime is 172065601. The next prime is 172065623. The reversal of 172065620 is 26560271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172065623) 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, 207647 + ... + 208473.

It is an arithmetic number, because the mean of its divisors is an integer number (7685496).

Almost surely, 2^172065620 is an apocalyptic number.

172065620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172065620 is an abundant number, since it is smaller than the sum of its proper divisors (196838188).

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

172065620 is a wasteful number, since it uses less digits than its factorization.

172065620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 172065620 is about 13117.3785490852. The cubic root of 172065620 is about 556.2004909856.

The spelling of 172065620 in words is "one hundred seventy-two million, sixty-five thousand, six hundred twenty".