68658901 has 2 divisors, whose sum is σ = 68658902. Its totient is φ = 68658900.

The previous prime is 68658899. The next prime is 68658929. The reversal of 68658901 is 10985686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 2220100 = 8151^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 68658901 - 2¹ = 68658899 is a prime.

Together with 68658899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68658701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34329450 + 34329451.

It is an arithmetic number, because the mean of its divisors is an integer number (34329451).

Almost surely, 2^68658901 is an apocalyptic number.

It is an amenable number.

68658901 is a deficient number, since it is larger than the sum of its proper divisors (1).

68658901 is an equidigital number, since it uses as much as digits as its factorization.

68658901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 68658901 is about 8286.0666784669. The cubic root of 68658901 is about 409.4796114450.

The spelling of 68658901 in words is "sixty-eight million, six hundred fifty-eight thousand, nine hundred one".