804947651 has 2 divisors, whose sum is σ = 804947652. Its totient is φ = 804947650.

The previous prime is 804947641. The next prime is 804947657. The reversal of 804947651 is 156749408.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804947651 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (804947657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402473825 + 402473826.

It is an arithmetic number, because the mean of its divisors is an integer number (402473826).

Almost surely, 2^804947651 is an apocalyptic number.

804947651 is a deficient number, since it is larger than the sum of its proper divisors (1).

804947651 is an equidigital number, since it uses as much as digits as its factorization.

804947651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 804947651 is about 28371.5993733170. The cubic root of 804947651 is about 930.2275817954.

The spelling of 804947651 in words is "eight hundred four million, nine hundred forty-seven thousand, six hundred fifty-one".