697337680 has 40 divisors (see below), whose sum is σ = 1746028872. Its totient is φ = 257478144.

The previous prime is 697337651. The next prime is 697337681. The reversal of 697337680 is 86733796.

It can be written as a sum of positive squares in 4 ways, for example, as 110923024 + 586414656 = 10532^2 + 24216^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697337681) 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 7 ways as a sum of consecutive naturals, for example, 334219 + ... + 336298.

Almost surely, 2^697337680 is an apocalyptic number.

It is an amenable number.

697337680 is an abundant number, since it is smaller than the sum of its proper divisors (1048691192).

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

697337680 is a wasteful number, since it uses less digits than its factorization.

697337680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670543 (or 670537 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 697337680 is about 26407.1520615155. The cubic root of 697337680 is about 886.7769123161.

The spelling of 697337680 in words is "six hundred ninety-seven million, three hundred thirty-seven thousand, six hundred eighty".