690080 has 48 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 260352.

The previous prime is 690073. The next prime is 690089. The reversal of 690080 is 80096.

It is not an unprimeable number, because it can be changed into a prime (690089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2927 + ... + 3153.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2⁶⁹⁰⁰⁸⁰ 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 690080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861840).

690080 is an abundant number, since it is smaller than the sum of its proper divisors (1033600).

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

690080 is a wasteful number, since it uses less digits than its factorization.

690080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 690080 is about 830.7105392373. The cubic root of 690080 is about 88.3689741861.

The spelling of 690080 in words is "six hundred ninety thousand, eighty".