Search a number
-
+
6863081 = 47146023
BaseRepresentation
bin11010001011100011101001
3110220200101012
4122023203221
53224104311
6403033305
7112222661
oct32134351
913820335
106863081
113968375
12236b835
131563ac4
14ca91a1
1590878b
hex68b8e9

6863081 has 4 divisors (see below), whose sum is σ = 7009152. Its totient is φ = 6717012.

The previous prime is 6863071. The next prime is 6863099. The reversal of 6863081 is 1803686.

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 a de Polignac number, because none of the positive numbers 2k-6863081 is a prime.

It is a super-2 number, since 2×68630812 = 94203761625122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6863071) 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, 72965 + ... + 73058.

It is an arithmetic number, because the mean of its divisors is an integer number (1752288).

Almost surely, 26863081 is an apocalyptic number.

It is an amenable number.

6863081 is a deficient number, since it is larger than the sum of its proper divisors (146071).

6863081 is a wasteful number, since it uses less digits than its factorization.

6863081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146070.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6863081 is about 2619.7482703497. The cubic root of 6863081 is about 190.0376748928.

The spelling of 6863081 in words is "six million, eight hundred sixty-three thousand, eighty-one".

Divisors: 1 47 146023 6863081