172616564 has 12 divisors (see below), whose sum is σ = 315213024. Its totient is φ = 82555704.

The previous prime is 172616557. The next prime is 172616569. The reversal of 172616564 is 465616271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172616569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938042 + ... + 938225.

It is an arithmetic number, because the mean of its divisors is an integer number (26267752).

Almost surely, 2^172616564 is an apocalyptic number.

It is an amenable number.

172616564 is a deficient number, since it is larger than the sum of its proper divisors (142596460).

172616564 is a wasteful number, since it uses less digits than its factorization.

172616564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876294 (or 1876292 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 172616564 is about 13138.3623028138. The cubic root of 172616564 is about 556.7934989346.

The spelling of 172616564 in words is "one hundred seventy-two million, six hundred sixteen thousand, five hundred sixty-four".