84618653 has 4 divisors (see below), whose sum is σ = 96707040. Its totient is φ = 72530268.

The previous prime is 84618637. The next prime is 84618671. The reversal of 84618653 is 35681648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84618653 - 2⁴ = 84618637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84618653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84618683) 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, 6044183 + ... + 6044196.

It is an arithmetic number, because the mean of its divisors is an integer number (24176760).

Almost surely, 2^84618653 is an apocalyptic number.

It is an amenable number.

84618653 is a deficient number, since it is larger than the sum of its proper divisors (12088387).

84618653 is a wasteful number, since it uses less digits than its factorization.

84618653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12088386.

The product of its digits is 138240, while the sum is 41.

The square root of 84618653 is about 9198.8397637963. The cubic root of 84618653 is about 439.0244450319.

The spelling of 84618653 in words is "eighty-four million, six hundred eighteen thousand, six hundred fifty-three".