68536399 has 2 divisors, whose sum is σ = 68536400. Its totient is φ = 68536398.

The previous prime is 68536397. The next prime is 68536411. The reversal of 68536399 is 99363586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68536399 - 2¹ = 68536397 is a prime.

Together with 68536397, 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 (68536397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34268199 + 34268200.

It is an arithmetic number, because the mean of its divisors is an integer number (34268200).

Almost surely, 2^68536399 is an apocalyptic number.

68536399 is a deficient number, since it is larger than the sum of its proper divisors (1).

68536399 is an equidigital number, since it uses as much as digits as its factorization.

68536399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 68536399 is about 8278.6713305941. The cubic root of 68536399 is about 409.2359337208.

The spelling of 68536399 in words is "sixty-eight million, five hundred thirty-six thousand, three hundred ninety-nine".