68402837 has 2 divisors, whose sum is σ = 68402838. Its totient is φ = 68402836.

The previous prime is 68402821. The next prime is 68402843. The reversal of 68402837 is 73820486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52330756 + 16072081 = 7234^2 + 4009^2 .

It is a cyclic number.

It is not a de Polignac number, because 68402837 - 2⁴ = 68402821 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68402837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68402857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34201418 + 34201419.

It is an arithmetic number, because the mean of its divisors is an integer number (34201419).

Almost surely, 2^68402837 is an apocalyptic number.

It is an amenable number.

68402837 is a deficient number, since it is larger than the sum of its proper divisors (1).

68402837 is an equidigital number, since it uses as much as digits as its factorization.

68402837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 68402837 is about 8270.6007641525. The cubic root of 68402837 is about 408.9699246381.

The spelling of 68402837 in words is "sixty-eight million, four hundred two thousand, eight hundred thirty-seven".