84836641 has 4 divisors (see below), whose sum is σ = 84906900. Its totient is φ = 84766384.

The previous prime is 84836639. The next prime is 84836659. The reversal of 84836641 is 14663848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60777616 + 24059025 = 7796^2 + 4905^2 .

It is a cyclic number.

It is not a de Polignac number, because 84836641 - 2¹ = 84836639 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84836594 and 84836603.

It is not an unprimeable number, because it can be changed into a prime (84836611) 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, 33286 + ... + 35743.

It is an arithmetic number, because the mean of its divisors is an integer number (21226725).

Almost surely, 2^84836641 is an apocalyptic number.

It is an amenable number.

84836641 is a deficient number, since it is larger than the sum of its proper divisors (70259).

84836641 is a wasteful number, since it uses less digits than its factorization.

84836641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70258.

The product of its digits is 110592, while the sum is 40.

The square root of 84836641 is about 9210.6808108847. The cubic root of 84836641 is about 439.4011153234.

The spelling of 84836641 in words is "eighty-four million, eight hundred thirty-six thousand, six hundred forty-one".