68437507 has 2 divisors, whose sum is σ = 68437508. Its totient is φ = 68437506.

The previous prime is 68437471. The next prime is 68437511. The reversal of 68437507 is 70573486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68437507 - 2²³ = 60048899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68437507.

It is not a weakly prime, because it can be changed into another prime (68437517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34218753 + 34218754.

It is an arithmetic number, because the mean of its divisors is an integer number (34218754).

Almost surely, 2^68437507 is an apocalyptic number.

68437507 is a deficient number, since it is larger than the sum of its proper divisors (1).

68437507 is an equidigital number, since it uses as much as digits as its factorization.

68437507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 68437507 is about 8272.6964769657. The cubic root of 68437507 is about 409.0390084805.

The spelling of 68437507 in words is "sixty-eight million, four hundred thirty-seven thousand, five hundred seven".