697613888 has 14 divisors (see below), whose sum is σ = 1384327686. Its totient is φ = 348806912.

The previous prime is 697613869. The next prime is 697613911. The reversal of 697613888 is 888316796.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 647600704 + 50013184 = 25448^2 + 7072^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5450045 + ... + 5450172.

It is an arithmetic number, because the mean of its divisors is an integer number (98880549).

Almost surely, 2^697613888 is an apocalyptic number.

It is an amenable number.

697613888 is a deficient number, since it is larger than the sum of its proper divisors (686713798).

697613888 is a wasteful number, since it uses less digits than its factorization.

697613888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10900229 (or 10900219 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The square root of 697613888 is about 26412.3813390614. The cubic root of 697613888 is about 886.8939778129.

The spelling of 697613888 in words is "six hundred ninety-seven million, six hundred thirteen thousand, eight hundred eighty-eight".