695045621 has 2 divisors, whose sum is σ = 695045622. Its totient is φ = 695045620.

The previous prime is 695045599. The next prime is 695045677. The reversal of 695045621 is 126540596.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624250225 + 70795396 = 24985^2 + 8414^2 .

It is a cyclic number.

It is not a de Polignac number, because 695045621 - 2¹⁸ = 694783477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (695045321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347522810 + 347522811.

It is an arithmetic number, because the mean of its divisors is an integer number (347522811).

Almost surely, 2^695045621 is an apocalyptic number.

It is an amenable number.

695045621 is a deficient number, since it is larger than the sum of its proper divisors (1).

695045621 is an equidigital number, since it uses as much as digits as its factorization.

695045621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 695045621 is about 26363.7178903128. The cubic root of 695045621 is about 885.8042721157.

The spelling of 695045621 in words is "six hundred ninety-five million, forty-five thousand, six hundred twenty-one".