864450 has 72 divisors (see below), whose sum is σ = 2480868. Its totient is φ = 215040.

The previous prime is 864449. The next prime is 864491. The reversal of 864450 is 54468.

It can be written as a sum of positive squares in 6 ways, for example, as 173889 + 690561 = 417^2 + 831^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7594 + ... + 7706.

2⁸⁶⁴⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240434).

864450 is an abundant number, since it is smaller than the sum of its proper divisors (1616418).

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

864450 is a wasteful number, since it uses less digits than its factorization.

864450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 864450 is about 929.7580330387. The cubic root of 864450 is about 95.2605956758.

The spelling of 864450 in words is "eight hundred sixty-four thousand, four hundred fifty".