695621 has 2 divisors, whose sum is σ = 695622. Its totient is φ = 695620.

The previous prime is 695603. The next prime is 695627. The reversal of 695621 is 126596.

695621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474721 + 220900 = 689^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 695621 - 2¹⁰ = 694597 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 695621.

It is not a weakly prime, because it can be changed into another prime (695627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347810 + 347811.

It is an arithmetic number, because the mean of its divisors is an integer number (347811).

2⁶⁹⁵⁶²¹ is an apocalyptic number.

It is an amenable number.

695621 is a deficient number, since it is larger than the sum of its proper divisors (1).

695621 is an equidigital number, since it uses as much as digits as its factorization.

695621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 695621 is about 834.0389679146. The cubic root of 695621 is about 88.6048636219.

The spelling of 695621 in words is "six hundred ninety-five thousand, six hundred twenty-one".