84272653 has 4 divisors (see below), whose sum is σ = 84292128. Its totient is φ = 84253180.

The previous prime is 84272651. The next prime is 84272677. The reversal of 84272653 is 35627248.

84272653 is a nontrivial binomial coefficient, being equal to C(12983, 2).

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 not a de Polignac number, because 84272653 - 2¹ = 84272651 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 (84272651) 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, 1 + ... + 12982.

It is an arithmetic number, because the mean of its divisors is an integer number (21073032).

Almost surely, 2^84272653 is an apocalyptic number.

84272653 is the 12982-nd triangular number.

84272653 is the 4328-th centered nonagonal number.

It is an amenable number.

84272653 is a deficient number, since it is larger than the sum of its proper divisors (19475).

84272653 is a wasteful number, since it uses less digits than its factorization.

84272653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19474.

The product of its digits is 80640, while the sum is 37.

The square root of 84272653 is about 9180.0137799461. The cubic root of 84272653 is about 438.4252470858.

The spelling of 84272653 in words is "eighty-four million, two hundred seventy-two thousand, six hundred fifty-three".