697699396 has 27 divisors (see below), whose sum is σ = 1251960157. Its totient is φ = 340212320.

The previous prime is 697699393. The next prime is 697699441. The reversal of 697699396 is 693996796.

It is a happy number.

The square root of 697699396 is 26414.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 471497796 + 226201600 = 21714^2 + 15040^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697699393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2482776 + ... + 2483056.

Almost surely, 2^697699396 is an apocalyptic number.

697699396 is the 26414-th square number.

It is an amenable number.

697699396 is a deficient number, since it is larger than the sum of its proper divisors (554260761).

697699396 is an equidigital number, since it uses as much as digits as its factorization.

697699396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 330 counting only the distinct ones).

The product of its digits is 29760696, while the sum is 64.

The cubic root of 697699396 is about 886.9302124853.

Multiplying 697699396 by its sum of digits (64), we get a square (44652761344 = 211312²).

The spelling of 697699396 in words is "six hundred ninety-seven million, six hundred ninety-nine thousand, three hundred ninety-six".