82636563 has 4 divisors (see below), whose sum is σ = 110182088. Its totient is φ = 55091040.

The previous prime is 82636553. The next prime is 82636571. The reversal of 82636563 is 36563628.

It is a happy number.

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

It is not a de Polignac number, because 82636563 - 2¹⁸ = 82374419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82636513) 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, 13772758 + ... + 13772763.

It is an arithmetic number, because the mean of its divisors is an integer number (27545522).

Almost surely, 2^82636563 is an apocalyptic number.

82636563 is a deficient number, since it is larger than the sum of its proper divisors (27545525).

82636563 is a wasteful number, since it uses less digits than its factorization.

82636563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27545524.

The product of its digits is 155520, while the sum is 39.

The square root of 82636563 is about 9090.4654996320. The cubic root of 82636563 is about 435.5694537071.

The spelling of 82636563 in words is "eighty-two million, six hundred thirty-six thousand, five hundred sixty-three".