68293857 has 16 divisors (see below), whose sum is σ = 93044160. Its totient is φ = 44544000.

The previous prime is 68293829. The next prime is 68293871. The reversal of 68293857 is 75839286.

It is not a de Polignac number, because 68293857 - 2¹⁸ = 68031713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68293457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41857 + ... + 43457.

It is an arithmetic number, because the mean of its divisors is an integer number (5815260).

Almost surely, 2^68293857 is an apocalyptic number.

It is an amenable number.

68293857 is a deficient number, since it is larger than the sum of its proper divisors (24750303).

68293857 is a wasteful number, since it uses less digits than its factorization.

68293857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904.

The product of its digits is 725760, while the sum is 48.

The square root of 68293857 is about 8264.0097410398. The cubic root of 68293857 is about 408.7526177015.

The spelling of 68293857 in words is "sixty-eight million, two hundred ninety-three thousand, eight hundred fifty-seven".