68435947 has 2 divisors, whose sum is σ = 68435948. Its totient is φ = 68435946.

The previous prime is 68435923. The next prime is 68435957. The reversal of 68435947 is 74953486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68435947 - 2¹⁹ = 67911659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68435897 and 68435906.

It is not a weakly prime, because it can be changed into another prime (68435957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34217973 + 34217974.

It is an arithmetic number, because the mean of its divisors is an integer number (34217974).

Almost surely, 2^68435947 is an apocalyptic number.

68435947 is a deficient number, since it is larger than the sum of its proper divisors (1).

68435947 is an equidigital number, since it uses as much as digits as its factorization.

68435947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 68435947 is about 8272.6021903631. The cubic root of 68435947 is about 409.0359005078.

The spelling of 68435947 in words is "sixty-eight million, four hundred thirty-five thousand, nine hundred forty-seven".