84664143 has 8 divisors (see below), whose sum is σ = 125428400. Its totient is φ = 56442744.

The previous prime is 84664141. The next prime is 84664147. The reversal of 84664143 is 34146648.

84664143 is a `hidden beast` number, since 8 + 4 + 6 + 641 + 4 + 3 = 666.

It is not a de Polignac number, because 84664143 - 2¹ = 84664141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84664098 and 84664107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84664141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1567828 + ... + 1567881.

It is an arithmetic number, because the mean of its divisors is an integer number (15678550).

Almost surely, 2^84664143 is an apocalyptic number.

84664143 is a deficient number, since it is larger than the sum of its proper divisors (40764257).

84664143 is a wasteful number, since it uses less digits than its factorization.

84664143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135718 (or 3135712 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 84664143 is about 9201.3120260102. The cubic root of 84664143 is about 439.1031024107.

The spelling of 84664143 in words is "eighty-four million, six hundred sixty-four thousand, one hundred forty-three".