68293237 has 2 divisors, whose sum is σ = 68293238. Its totient is φ = 68293236.

The previous prime is 68293219. The next prime is 68293241. The reversal of 68293237 is 73239286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48986001 + 19307236 = 6999^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 68293237 - 2⁷ = 68293109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68293237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68293297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34146618 + 34146619.

It is an arithmetic number, because the mean of its divisors is an integer number (34146619).

Almost surely, 2^68293237 is an apocalyptic number.

It is an amenable number.

68293237 is a deficient number, since it is larger than the sum of its proper divisors (1).

68293237 is an equidigital number, since it uses as much as digits as its factorization.

68293237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 68293237 is about 8263.9722288982. The cubic root of 68293237 is about 408.7513807558.

The spelling of 68293237 in words is "sixty-eight million, two hundred ninety-three thousand, two hundred thirty-seven".