697980 has 24 divisors (see below), whose sum is σ = 1954512. Its totient is φ = 186112.

The previous prime is 697979. The next prime is 697993. The reversal of 697980 is 89796.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697980.

It is an unprimeable number.

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, 5757 + ... + 5876.

It is an arithmetic number, because the mean of its divisors is an integer number (81438).

2⁶⁹⁷⁹⁸⁰ is an apocalyptic number.

697980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

697980 is an abundant number, since it is smaller than the sum of its proper divisors (1256532).

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

697980 is a wasteful number, since it uses less digits than its factorization.

697980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11645 (or 11643 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 697980 is about 835.4519734850. The cubic root of 697980 is about 88.7049099793.

The spelling of 697980 in words is "six hundred ninety-seven thousand, nine hundred eighty".