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BaseRepresentation
bin1100100111
31002220
430213
511212
63423
72232
oct1447
91086
10807
11674
12573
134a1
14419
1538c
hex327

807 has 4 divisors (see below), whose sum is σ = 1080. Its totient is φ = 536.

The previous prime is 797. The next prime is 809. The reversal of 807 is 708.

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

It is a cyclic number.

It is not a de Polignac number, because 807 - 26 = 743 is a prime.

It is a D-number.

It is a plaindrome in base 8 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809) 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, 132 + ... + 137.

It is an arithmetic number, because the mean of its divisors is an integer number (270).

2807 is an apocalyptic number.

807 is a deficient number, since it is larger than the sum of its proper divisors (273).

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

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

The sum of its prime factors is 272.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 807 is about 28.4077454227. The cubic root of 807 is about 9.3101750123.

Subtracting from 807 its reverse (708), we obtain a palindrome (99).

The spelling of 807 in words is "eight hundred seven", and thus it is an aban number and an oban number.

Divisors: 1 3 269 807