695576809 has 4 divisors (see below), whose sum is σ = 695885904. Its totient is φ = 695267716.

The previous prime is 695576807. The next prime is 695576831. The reversal of 695576809 is 908675596.

It is a happy number.

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 695576809 - 2¹ = 695576807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 695576809.

It is not an unprimeable number, because it can be changed into a prime (695576807) 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, 151147 + ... + 155680.

It is an arithmetic number, because the mean of its divisors is an integer number (173971476).

Almost surely, 2^695576809 is an apocalyptic number.

It is an amenable number.

695576809 is a deficient number, since it is larger than the sum of its proper divisors (309095).

695576809 is a wasteful number, since it uses less digits than its factorization.

695576809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309094.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The square root of 695576809 is about 26373.7901902628. The cubic root of 695576809 is about 886.0298730303.

The spelling of 695576809 in words is "six hundred ninety-five million, five hundred seventy-six thousand, eight hundred nine".