Search a number
-
+
669684 = 22355807
BaseRepresentation
bin10100011011111110100
31021000122010
42203133310
5132412214
622204220
75456301
oct2433764
91230563
10669684
11418164
12283670
131a5a82
141360a8
15d3659
hexa37f4

669684 has 12 divisors (see below), whose sum is σ = 1562624. Its totient is φ = 223224.

The previous prime is 669679. The next prime is 669689. The reversal of 669684 is 486966.

It is an interprime number because it is at equal distance from previous prime (669679) and next prime (669689).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27892 + ... + 27915.

2669684 is an apocalyptic number.

It is an amenable number.

669684 is an abundant number, since it is smaller than the sum of its proper divisors (892940).

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

669684 is a wasteful number, since it uses less digits than its factorization.

669684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55814 (or 55812 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 669684 is about 818.3422266998. The cubic root of 669684 is about 87.4896423114.

The spelling of 669684 in words is "six hundred sixty-nine thousand, six hundred eighty-four".

Divisors: 1 2 3 4 6 12 55807 111614 167421 223228 334842 669684