695559561 has 4 divisors (see below), whose sum is σ = 927412752. Its totient is φ = 463706372.

The previous prime is 695559551. The next prime is 695559587. The reversal of 695559561 is 165955596.

695559561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 695559561 - 2⁶ = 695559497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (695559551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115926591 + ... + 115926596.

It is an arithmetic number, because the mean of its divisors is an integer number (231853188).

Almost surely, 2^695559561 is an apocalyptic number.

It is an amenable number.

695559561 is a deficient number, since it is larger than the sum of its proper divisors (231853191).

695559561 is a wasteful number, since it uses less digits than its factorization.

695559561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231853190.

The product of its digits is 1822500, while the sum is 51.

The square root of 695559561 is about 26373.4631969334. The cubic root of 695559561 is about 886.0225494348.

The spelling of 695559561 in words is "six hundred ninety-five million, five hundred fifty-nine thousand, five hundred sixty-one".