84651 has 16 divisors (see below), whose sum is σ = 134400. Its totient is φ = 46368.

The previous prime is 84649. The next prime is 84653. The reversal of 84651 is 15648.

It is an interprime number because it is at equal distance from previous prime (84649) and next prime (84653).

It is not a de Polignac number, because 84651 - 2¹ = 84649 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84651.

It is not an unprimeable number, because it can be changed into a prime (84653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (8400).

2⁸⁴⁶⁵¹ is an apocalyptic number.

84651 is a deficient number, since it is larger than the sum of its proper divisors (49749).

84651 is a wasteful number, since it uses less digits than its factorization.

84651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its digits is 960, while the sum is 24.

The square root of 84651 is about 290.9484490421. The cubic root of 84651 is about 43.9080379565.

The spelling of 84651 in words is "eighty-four thousand, six hundred fifty-one".