84816623 has 4 divisors (see below), whose sum is σ = 86621280. Its totient is φ = 83011968.

The previous prime is 84816607. The next prime is 84816631. The reversal of 84816623 is 32661848.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84816623 - 2⁴ = 84816607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84816643) 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, 902258 + ... + 902351.

It is an arithmetic number, because the mean of its divisors is an integer number (21655320).

Almost surely, 2^84816623 is an apocalyptic number.

84816623 is a deficient number, since it is larger than the sum of its proper divisors (1804657).

84816623 is a wasteful number, since it uses less digits than its factorization.

84816623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804656.

The product of its digits is 55296, while the sum is 38.

The square root of 84816623 is about 9209.5940735735. The cubic root of 84816623 is about 439.3665523353.

It can be divided in two parts, 848 and 16623, that added together give a palindrome (17471).

The spelling of 84816623 in words is "eighty-four million, eight hundred sixteen thousand, six hundred twenty-three".