869680 has 40 divisors (see below), whose sum is σ = 2312352. Its totient is φ = 297984.

The previous prime is 869663. The next prime is 869683. The reversal of 869680 is 86968.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (869683) 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, 217 + ... + 1336.

2⁸⁶⁹⁶⁸⁰ is an apocalyptic number.

869680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

869680 is an abundant number, since it is smaller than the sum of its proper divisors (1442672).

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

869680 is a wasteful number, since it uses less digits than its factorization.

869680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 869680 is about 932.5663515268. The cubic root of 869680 is about 95.4523212565.

The spelling of 869680 in words is "eight hundred sixty-nine thousand, six hundred eighty".