172540684 has 12 divisors (see below), whose sum is σ = 319707864. Its totient is φ = 81195584.

The previous prime is 172540601. The next prime is 172540703. The reversal of 172540684 is 486045271.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268614 + ... + 1268749.

It is an arithmetic number, because the mean of its divisors is an integer number (26642322).

Almost surely, 2^172540684 is an apocalyptic number.

It is an amenable number.

172540684 is a deficient number, since it is larger than the sum of its proper divisors (147167180).

172540684 is a wasteful number, since it uses less digits than its factorization.

172540684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537384 (or 2537382 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 172540684 is about 13135.4742586631. The cubic root of 172540684 is about 556.7119005796.

The spelling of 172540684 in words is "one hundred seventy-two million, five hundred forty thousand, six hundred eighty-four".