695070721 has 6 divisors (see below), whose sum is σ = 738362630. Its totient is φ = 654183936.

The previous prime is 695070709. The next prime is 695070731. The reversal of 695070721 is 127070596.

It can be written as a sum of positive squares in 3 ways, for example, as 468116496 + 226954225 = 21636^2 + 15065^2 .

It is not a de Polignac number, because 695070721 - 2⁵ = 695070689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (695070731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1202256 + ... + 1202833.

Almost surely, 2^695070721 is an apocalyptic number.

It is an amenable number.

695070721 is a deficient number, since it is larger than the sum of its proper divisors (43291909).

695070721 is a wasteful number, since it uses less digits than its factorization.

695070721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405123 (or 2405106 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 695070721 is about 26364.1939190259. The cubic root of 695070721 is about 885.8149349263.

The spelling of 695070721 in words is "six hundred ninety-five million, seventy thousand, seven hundred twenty-one".