699040 has 48 divisors (see below), whose sum is σ = 1755432. Its totient is φ = 262144.

The previous prime is 699037. The next prime is 699053. The reversal of 699040 is 40996.

It can be written as a sum of positive squares in 4 ways, for example, as 698896 + 144 = 836^2 + 12^2 .

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is an unprimeable number.

In principle, a polygon with 699040 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2592 + ... + 2848.

2⁶⁹⁹⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877716).

699040 is an abundant number, since it is smaller than the sum of its proper divisors (1056392).

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

699040 is a wasteful number, since it uses less digits than its factorization.

699040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 699040 is about 836.0861199661. The cubic root of 699040 is about 88.7497917075.

The spelling of 699040 in words is "six hundred ninety-nine thousand, forty".