695007779 has 2 divisors, whose sum is σ = 695007780. Its totient is φ = 695007778.

The previous prime is 695007763. The next prime is 695007809. The reversal of 695007779 is 977700596.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 695007779 - 2⁴ = 695007763 is a prime.

It is not a weakly prime, because it can be changed into another prime (695007739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347503889 + 347503890.

It is an arithmetic number, because the mean of its divisors is an integer number (347503890).

Almost surely, 2^695007779 is an apocalyptic number.

695007779 is a deficient number, since it is larger than the sum of its proper divisors (1).

695007779 is an equidigital number, since it uses as much as digits as its factorization.

695007779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 695007779 is about 26363.0001896597. Note that the first 3 decimals coincide. The cubic root of 695007779 is about 885.7881958502.

The spelling of 695007779 in words is "six hundred ninety-five million, seven thousand, seven hundred seventy-nine".