695728931 has 4 divisors (see below), whose sum is σ = 703546200. Its totient is φ = 687911664.

The previous prime is 695728919. The next prime is 695728951. The reversal of 695728931 is 139827596.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 695728931 - 2¹⁴ = 695712547 is a prime.

It is a super-2 number, since 2×695728931² = 968077490860805522, which contains 22 as substring.

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 695728931.

It is not an unprimeable number, because it can be changed into a prime (695728951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908501 + ... + 3908678.

It is an arithmetic number, because the mean of its divisors is an integer number (175886550).

Almost surely, 2^695728931 is an apocalyptic number.

695728931 is a deficient number, since it is larger than the sum of its proper divisors (7817269).

695728931 is an equidigital number, since it uses as much as digits as its factorization.

695728931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817268.

The product of its digits is 816480, while the sum is 50.

The square root of 695728931 is about 26376.6739942700. The cubic root of 695728931 is about 886.0944596248.

The spelling of 695728931 in words is "six hundred ninety-five million, seven hundred twenty-eight thousand, nine hundred thirty-one".