695585821 has 16 divisors (see below), whose sum is σ = 858902400. Its totient is φ = 561140160.

The previous prime is 695585783. The next prime is 695585827. The reversal of 695585821 is 128585596.

It is not a de Polignac number, because 695585821 - 2¹⁹ = 695061533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695585827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53815 + ... + 65476.

It is an arithmetic number, because the mean of its divisors is an integer number (53681400).

Almost surely, 2^695585821 is an apocalyptic number.

It is an amenable number.

695585821 is a deficient number, since it is larger than the sum of its proper divisors (163316579).

695585821 is a wasteful number, since it uses less digits than its factorization.

695585821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119329 (or 119315 counting only the distinct ones).

The product of its digits is 864000, while the sum is 49.

The square root of 695585821 is about 26373.9610411481. The cubic root of 695585821 is about 886.0336995269.

The spelling of 695585821 in words is "six hundred ninety-five million, five hundred eighty-five thousand, eight hundred twenty-one".