68091312 has 20 divisors (see below), whose sum is σ = 175902680. Its totient is φ = 22697088.

The previous prime is 68091301. The next prime is 68091337. The reversal of 68091312 is 21319086.

It is a self number, because there is not a number n which added to its sum of digits gives 68091312.

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, 709237 + ... + 709332.

It is an arithmetic number, because the mean of its divisors is an integer number (8795134).

Almost surely, 2^68091312 is an apocalyptic number.

It is an amenable number.

68091312 is an abundant number, since it is smaller than the sum of its proper divisors (107811368).

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

68091312 is a wasteful number, since it uses less digits than its factorization.

68091312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418580 (or 1418574 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 68091312 is about 8251.7459970603. The cubic root of 68091312 is about 408.3481265593.

The spelling of 68091312 in words is "sixty-eight million, ninety-one thousand, three hundred twelve".