68202539 has 2 divisors, whose sum is σ = 68202540. Its totient is φ = 68202538.

The previous prime is 68202523. The next prime is 68202551. The reversal of 68202539 is 93520286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68202539 - 2⁴ = 68202523 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68202499 and 68202508.

It is not a weakly prime, because it can be changed into another prime (68202509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34101269 + 34101270.

It is an arithmetic number, because the mean of its divisors is an integer number (34101270).

Almost surely, 2^68202539 is an apocalyptic number.

68202539 is a deficient number, since it is larger than the sum of its proper divisors (1).

68202539 is an equidigital number, since it uses as much as digits as its factorization.

68202539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 68202539 is about 8258.4828509842. The cubic root of 68202539 is about 408.5703508410.

The spelling of 68202539 in words is "sixty-eight million, two hundred two thousand, five hundred thirty-nine".