697223744 has 42 divisors (see below), whose sum is σ = 1609446870. Its totient is φ = 298808832.

The previous prime is 697223731. The next prime is 697223749. The reversal of 697223744 is 447322796.

It can be written as a sum of positive squares in only one way, i.e., 571783744 + 125440000 = 23912^2 + 11200^2 .

It is a super-2 number, since 2×697223744² = 972241898394755072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 697223695 and 697223704.

It is not an unprimeable number, because it can be changed into a prime (697223749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108029 + ... + 114300.

Almost surely, 2^697223744 is an apocalyptic number.

697223744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

697223744 is an abundant number, since it is smaller than the sum of its proper divisors (912223126).

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

697223744 is a wasteful number, since it uses less digits than its factorization.

697223744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222355 (or 222338 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The square root of 697223744 is about 26404.9946790375. The cubic root of 697223744 is about 886.7286137083.

The spelling of 697223744 in words is "six hundred ninety-seven million, two hundred twenty-three thousand, seven hundred forty-four".