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84631 is a prime number
BaseRepresentation
bin10100101010010111
311022002111
4110222113
510202011
61451451
7501511
oct245227
9138074
1084631
1158648
1240b87
132c6a1
1422bb1
151a121
hex14a97

84631 has 2 divisors, whose sum is σ = 84632. Its totient is φ = 84630.

The previous prime is 84629. The next prime is 84649. The reversal of 84631 is 13648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84631 - 21 = 84629 is a prime.

It is a super-2 number, since 2×846312 = 14324812322, which contains 22 as substring.

Together with 84629, it forms a pair of twin primes.

It is a Chen prime.

84631 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42315 + 42316.

It is an arithmetic number, because the mean of its divisors is an integer number (42316).

284631 is an apocalyptic number.

84631 is the 156-th centered heptagonal number.

84631 is a deficient number, since it is larger than the sum of its proper divisors (1).

84631 is an equidigital number, since it uses as much as digits as its factorization.

84631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 84631 is about 290.9140766618. The cubic root of 84631 is about 43.9045797185.

It can be divided in two parts, 8463 and 1, that added together give a square (8464 = 922).

The spelling of 84631 in words is "eighty-four thousand, six hundred thirty-one".