Search a number
-
+
5670681 = 31890227
BaseRepresentation
bin10101101000011100011001
3101200002201020
4111220130121
52422430211
6321313053
766125412
oct25503431
911602636
105670681
113223515
121a95789
131237143
14a78809
15770306
hex568719

5670681 has 4 divisors (see below), whose sum is σ = 7560912. Its totient is φ = 3780452.

The previous prime is 5670671. The next prime is 5670697. The reversal of 5670681 is 1860765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5670681 - 25 = 5670649 is a prime.

It is a super-2 number, since 2×56706812 = 64313246007522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (5670611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945111 + ... + 945116.

It is an arithmetic number, because the mean of its divisors is an integer number (1890228).

Almost surely, 25670681 is an apocalyptic number.

It is an amenable number.

5670681 is a deficient number, since it is larger than the sum of its proper divisors (1890231).

5670681 is a wasteful number, since it uses less digits than its factorization.

5670681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890230.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 5670681 is about 2381.3191722237. The cubic root of 5670681 is about 178.3247972933.

The spelling of 5670681 in words is "five million, six hundred seventy thousand, six hundred eighty-one".

Divisors: 1 3 1890227 5670681