68210507 has 2 divisors, whose sum is σ = 68210508. Its totient is φ = 68210506.

The previous prime is 68210473. The next prime is 68210533. The reversal of 68210507 is 70501286.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68210507 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68210507.

It is not a weakly prime, because it can be changed into another prime (68210537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34105253 + 34105254.

It is an arithmetic number, because the mean of its divisors is an integer number (34105254).

Almost surely, 2^68210507 is an apocalyptic number.

68210507 is a deficient number, since it is larger than the sum of its proper divisors (1).

68210507 is an equidigital number, since it uses as much as digits as its factorization.

68210507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 68210507 is about 8258.9652499572. The cubic root of 68210507 is about 408.5862611078.

The spelling of 68210507 in words is "sixty-eight million, two hundred ten thousand, five hundred seven".