68757331 has 2 divisors, whose sum is σ = 68757332. Its totient is φ = 68757330.

The previous prime is 68757319. The next prime is 68757389. The reversal of 68757331 is 13375786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68757331 - 2¹⁵ = 68724563 is a prime.

It is a super-2 number, since 2×68757331² = 9455141132487122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68757131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34378665 + 34378666.

It is an arithmetic number, because the mean of its divisors is an integer number (34378666).

Almost surely, 2^68757331 is an apocalyptic number.

68757331 is a deficient number, since it is larger than the sum of its proper divisors (1).

68757331 is an equidigital number, since it uses as much as digits as its factorization.

68757331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 68757331 is about 8292.0040400376. The cubic root of 68757331 is about 409.6751958597.

The spelling of 68757331 in words is "sixty-eight million, seven hundred fifty-seven thousand, three hundred thirty-one".