68988172 has 48 divisors (see below), whose sum is σ = 135475200. Its totient is φ = 30476160.

The previous prime is 68988121. The next prime is 68988173. The reversal of 68988172 is 27188986.

It is not an unprimeable number, because it can be changed into a prime (68988173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309253 + ... + 309475.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^68988172 is an apocalyptic number.

It is an amenable number.

68988172 is a deficient number, since it is larger than the sum of its proper divisors (66487028).

68988172 is a wasteful number, since it uses less digits than its factorization.

68988172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 68988172 is about 8305.9118704691. The cubic root of 68988172 is about 410.1331552436.

The spelling of 68988172 in words is "sixty-eight million, nine hundred eighty-eight thousand, one hundred seventy-two".