695686820 has 12 divisors (see below), whose sum is σ = 1460942364. Its totient is φ = 278274720.

The previous prime is 695686807. The next prime is 695686837. The reversal of 695686820 is 28686596.

It can be written as a sum of positive squares in 2 ways, for example, as 367642276 + 328044544 = 19174^2 + 18112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17392151 + ... + 17392190.

It is an arithmetic number, because the mean of its divisors is an integer number (121745197).

Almost surely, 2^695686820 is an apocalyptic number.

It is an amenable number.

695686820 is an abundant number, since it is smaller than the sum of its proper divisors (765255544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

695686820 is a wasteful number, since it uses less digits than its factorization.

695686820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34784350 (or 34784348 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 695686820 is about 26375.8757200590. The cubic root of 695686820 is about 886.0765814565.

The spelling of 695686820 in words is "six hundred ninety-five million, six hundred eighty-six thousand, eight hundred twenty".