Search a number
-
+
80683541 = 611322681
BaseRepresentation
bin1001100111100…
…10001000010101
312121211011000022
410303302020111
5131123333131
612001154525
71666540661
oct463621025
9177734008
1080683541
11415a8814
122302ba45
131393c553
14aa038a1
15713b37b
hex4cf2215

80683541 has 4 divisors (see below), whose sum is σ = 82006284. Its totient is φ = 79360800.

The previous prime is 80683507. The next prime is 80683549. The reversal of 80683541 is 14538608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14326225 + 66357316 = 3785^2 + 8146^2 .

It is a cyclic number.

It is not a de Polignac number, because 80683541 - 214 = 80667157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80683549) 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, 661280 + ... + 661401.

It is an arithmetic number, because the mean of its divisors is an integer number (20501571).

Almost surely, 280683541 is an apocalyptic number.

It is an amenable number.

80683541 is a deficient number, since it is larger than the sum of its proper divisors (1322743).

80683541 is a wasteful number, since it uses less digits than its factorization.

80683541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322742.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 80683541 is about 8982.4017389560. The cubic root of 80683541 is about 432.1106630220.

The spelling of 80683541 in words is "eighty million, six hundred eighty-three thousand, five hundred forty-one".

Divisors: 1 61 1322681 80683541