68925091 has 2 divisors, whose sum is σ = 68925092. Its totient is φ = 68925090.

The previous prime is 68925061. The next prime is 68925113. The reversal of 68925091 is 19052986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68925091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68925061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34462545 + 34462546.

It is an arithmetic number, because the mean of its divisors is an integer number (34462546).

Almost surely, 2^68925091 is an apocalyptic number.

68925091 is a deficient number, since it is larger than the sum of its proper divisors (1).

68925091 is an equidigital number, since it uses as much as digits as its factorization.

68925091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 68925091 is about 8302.1136465360. The cubic root of 68925091 is about 410.0081120743.

The spelling of 68925091 in words is "sixty-eight million, nine hundred twenty-five thousand, ninety-one".