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806493 = 31914149
BaseRepresentation
bin11000100111001011101
31111222022010
43010321131
5201301433
625141433
76566202
oct3047135
91458263
10806493
11500a26
1232a879
1322311c
1416dca9
1510de63
hexc4e5d

806493 has 8 divisors (see below), whose sum is σ = 1132000. Its totient is φ = 509328.

The previous prime is 806483. The next prime is 806503. The reversal of 806493 is 394608.

It is an interprime number because it is at equal distance from previous prime (806483) and next prime (806503).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-806493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 806493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806453) 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 7 ways as a sum of consecutive naturals, for example, 7018 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (141500).

2806493 is an apocalyptic number.

It is an amenable number.

806493 is a deficient number, since it is larger than the sum of its proper divisors (325507).

806493 is a wasteful number, since it uses less digits than its factorization.

806493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14171.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 806493 is about 898.0495531985. The cubic root of 806493 is about 93.0822488936.

The spelling of 806493 in words is "eight hundred six thousand, four hundred ninety-three".

Divisors: 1 3 19 57 14149 42447 268831 806493