698580 has 36 divisors (see below), whose sum is σ = 2119572. Its totient is φ = 186240.

The previous prime is 698567. The next prime is 698591. The reversal of 698580 is 85896.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 352836 = 588^2 + 594^2 .

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 congruent number.

It is an unprimeable number.

698580 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1761 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (58877).

2⁶⁹⁸⁵⁸⁰ is an apocalyptic number.

698580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

698580 is an abundant number, since it is smaller than the sum of its proper divisors (1420992).

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

698580 is a wasteful number, since it uses less digits than its factorization.

698580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896 (or 3891 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 698580 is about 835.8109834167. The cubic root of 698580 is about 88.7303203075.

It can be divided in two parts, 69 and 8580, that added together give a square (8649 = 93²).

The spelling of 698580 in words is "six hundred ninety-eight thousand, five hundred eighty".