68089172 has 12 divisors (see below), whose sum is σ = 119442036. Its totient is φ = 33962880.

The previous prime is 68089159. The next prime is 68089193. The reversal of 68089172 is 27198086.

It can be written as a sum of positive squares in 2 ways, for example, as 3511876 + 64577296 = 1874^2 + 8036^2 .

It is a super-2 number, since 2×68089172² = 9272270687291168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 18533 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (9953503).

Almost surely, 2^68089172 is an apocalyptic number.

It is an amenable number.

68089172 is a deficient number, since it is larger than the sum of its proper divisors (51352864).

68089172 is a wasteful number, since it uses less digits than its factorization.

68089172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40858 (or 40856 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 68089172 is about 8251.6163265145. The cubic root of 68089172 is about 408.3438486070.

The spelling of 68089172 in words is "sixty-eight million, eighty-nine thousand, one hundred seventy-two".