68774947 has 2 divisors, whose sum is σ = 68774948. Its totient is φ = 68774946.

The previous prime is 68774941. The next prime is 68774977. The reversal of 68774947 is 74947786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68774947 - 2⁷ = 68774819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68774894 and 68774903.

It is not a weakly prime, because it can be changed into another prime (68774941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34387473 + 34387474.

It is an arithmetic number, because the mean of its divisors is an integer number (34387474).

Almost surely, 2^68774947 is an apocalyptic number.

68774947 is a deficient number, since it is larger than the sum of its proper divisors (1).

68774947 is an equidigital number, since it uses as much as digits as its factorization.

68774947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 52.

The square root of 68774947 is about 8293.0662001458. The cubic root of 68774947 is about 409.7101798723.

The spelling of 68774947 in words is "sixty-eight million, seven hundred seventy-four thousand, nine hundred forty-seven".