697880980 has 12 divisors (see below), whose sum is σ = 1465550100. Its totient is φ = 279152384.

The previous prime is 697880933. The next prime is 697880983. The reversal of 697880980 is 89088796.

It can be written as a sum of positive squares in 2 ways, for example, as 390299536 + 307581444 = 19756^2 + 17538^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697880983) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 17447005 + ... + 17447044.

It is an arithmetic number, because the mean of its divisors is an integer number (122129175).

Almost surely, 2^697880980 is an apocalyptic number.

It is an amenable number.

697880980 is an abundant number, since it is smaller than the sum of its proper divisors (767669120).

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

697880980 is a wasteful number, since it uses less digits than its factorization.

697880980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34894058 (or 34894056 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 697880980 is about 26417.4370444977. The cubic root of 697880980 is about 887.0071502834.

The spelling of 697880980 in words is "six hundred ninety-seven million, eight hundred eighty thousand, nine hundred eighty".