68997659 has 2 divisors, whose sum is σ = 68997660. Its totient is φ = 68997658.

The previous prime is 68997647. The next prime is 68997667. The reversal of 68997659 is 95679986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68997659 - 2¹² = 68993563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68997598 and 68997607.

It is not a weakly prime, because it can be changed into another prime (68997619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34498829 + 34498830.

It is an arithmetic number, because the mean of its divisors is an integer number (34498830).

Almost surely, 2^68997659 is an apocalyptic number.

68997659 is a deficient number, since it is larger than the sum of its proper divisors (1).

68997659 is an equidigital number, since it uses as much as digits as its factorization.

68997659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 59.

The square root of 68997659 is about 8306.4829500818. The cubic root of 68997659 is about 410.1519543836.

The spelling of 68997659 in words is "sixty-eight million, nine hundred ninety-seven thousand, six hundred fifty-nine".