697860 has 36 divisors (see below), whose sum is σ = 2117388. Its totient is φ = 186048.

The previous prime is 697831. The next prime is 697877. The reversal of 697860 is 68796.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 484416 = 462^2 + 696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759 + ... + 2118.

2⁶⁹⁷⁸⁶⁰ is an apocalyptic number.

697860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

697860 is an abundant number, since it is smaller than the sum of its proper divisors (1419528).

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

697860 is a wasteful number, since it uses less digits than its factorization.

697860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892 (or 3887 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 697860 is about 835.3801529843. The cubic root of 697860 is about 88.6998261663.

The spelling of 697860 in words is "six hundred ninety-seven thousand, eight hundred sixty".