68959997 has 2 divisors, whose sum is σ = 68959998. Its totient is φ = 68959996.

The previous prime is 68959937. The next prime is 68960011. The reversal of 68959997 is 79995986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41229241 + 27730756 = 6421^2 + 5266^2 .

It is a cyclic number.

It is not a de Polignac number, because 68959997 - 2²⁶ = 1851133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68959937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34479998 + 34479999.

It is an arithmetic number, because the mean of its divisors is an integer number (34479999).

Almost surely, 2^68959997 is an apocalyptic number.

It is an amenable number.

68959997 is a deficient number, since it is larger than the sum of its proper divisors (1).

68959997 is an equidigital number, since it uses as much as digits as its factorization.

68959997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 62.

The square root of 68959997 is about 8304.2156161795. The cubic root of 68959997 is about 410.0773143906.

The spelling of 68959997 in words is "sixty-eight million, nine hundred fifty-nine thousand, nine hundred ninety-seven".