1206864 has 90 divisors (see below), whose sum is σ = 3711630. Its totient is φ = 365568.

The previous prime is 1206841. The next prime is 1206869. The reversal of 1206864 is 4686021.

It can be written as a sum of positive squares in 3 ways, for example, as 501264 + 705600 = 708^2 + 840^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206869) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41602 + ... + 41630.

2^1206864 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 1206864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855815).

1206864 is an abundant number, since it is smaller than the sum of its proper divisors (2504766).

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

1206864 is a wasteful number, since it uses less digits than its factorization.

1206864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1206864 is about 1098.5736206554. The cubic root of 1206864 is about 106.4680853919.

The spelling of 1206864 in words is "one million, two hundred six thousand, eight hundred sixty-four".