68401253 has 2 divisors, whose sum is σ = 68401254. Its totient is φ = 68401252.

The previous prime is 68401247. The next prime is 68401327. The reversal of 68401253 is 35210486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62457409 + 5943844 = 7903^2 + 2438^2 .

It is a cyclic number.

It is not a de Polignac number, because 68401253 - 2⁶ = 68401189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68401453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34200626 + 34200627.

It is an arithmetic number, because the mean of its divisors is an integer number (34200627).

Almost surely, 2^68401253 is an apocalyptic number.

It is an amenable number.

68401253 is a deficient number, since it is larger than the sum of its proper divisors (1).

68401253 is an equidigital number, since it uses as much as digits as its factorization.

68401253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 68401253 is about 8270.5050027190. The cubic root of 68401253 is about 408.9667677839.

The spelling of 68401253 in words is "sixty-eight million, four hundred one thousand, two hundred fifty-three".