68187172 has 12 divisors (see below), whose sum is σ = 120668940. Its totient is φ = 33710336.

The previous prime is 68187139. The next prime is 68187209. The reversal of 68187172 is 27178186.

It can be written as a sum of positive squares in 2 ways, for example, as 37650496 + 30536676 = 6136^2 + 5526^2 .

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, 95413 + ... + 96124.

It is an arithmetic number, because the mean of its divisors is an integer number (10055745).

Almost surely, 2^68187172 is an apocalyptic number.

It is an amenable number.

68187172 is a deficient number, since it is larger than the sum of its proper divisors (52481768).

68187172 is a wasteful number, since it uses less digits than its factorization.

68187172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191630 (or 191628 counting only the distinct ones).

The product of its digits is 37632, while the sum is 40.

The square root of 68187172 is about 8257.5524218742. The cubic root of 68187172 is about 408.5396629698.

The spelling of 68187172 in words is "sixty-eight million, one hundred eighty-seven thousand, one hundred seventy-two".