172230681 has 16 divisors (see below), whose sum is σ = 271497600. Its totient is φ = 95023488.

The previous prime is 172230673. The next prime is 172230683. The reversal of 172230681 is 186032271.

It is not a de Polignac number, because 172230681 - 2³ = 172230673 is a prime.

It is a super-2 number, since 2×172230681² = 59326814955447522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172230683) 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, 140796 + ... + 142013.

It is an arithmetic number, because the mean of its divisors is an integer number (16968600).

Almost surely, 2^172230681 is an apocalyptic number.

It is an amenable number.

172230681 is a deficient number, since it is larger than the sum of its proper divisors (99266919).

172230681 is a wasteful number, since it uses less digits than its factorization.

172230681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282848.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 172230681 is about 13123.6687324848. The cubic root of 172230681 is about 556.3782868527.

The spelling of 172230681 in words is "one hundred seventy-two million, two hundred thirty thousand, six hundred eighty-one".