68251316 has 18 divisors (see below), whose sum is σ = 138940578. Its totient is φ = 29250480.

The previous prime is 68251307. The next prime is 68251321. The reversal of 68251316 is 61315286.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 23716 = 8260^2 + 154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173915 + ... + 174306.

It is an arithmetic number, because the mean of its divisors is an integer number (7718921).

Almost surely, 2^68251316 is an apocalyptic number.

It is an amenable number.

68251316 is an abundant number, since it is smaller than the sum of its proper divisors (70689262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68251316 is a wasteful number, since it uses less digits than its factorization.

68251316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348239 (or 348230 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 68251316 is about 8261.4354684885. The cubic root of 68251316 is about 408.6677278951.

The spelling of 68251316 in words is "sixty-eight million, two hundred fifty-one thousand, three hundred sixteen".