82987263 has 12 divisors (see below), whose sum is σ = 123110728. Its totient is φ = 53829360.

The previous prime is 82987207. The next prime is 82987271. The reversal of 82987263 is 36278928.

It is not a de Polignac number, because 82987263 - 2⁶ = 82987199 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 (82987273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124273 + ... + 124938.

Almost surely, 2^82987263 is an apocalyptic number.

82987263 is a deficient number, since it is larger than the sum of its proper divisors (40123465).

82987263 is a wasteful number, since it uses less digits than its factorization.

82987263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249254 (or 249251 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 82987263 is about 9109.7345186344. The cubic root of 82987263 is about 436.1847528738.

The spelling of 82987263 in words is "eighty-two million, nine hundred eighty-seven thousand, two hundred sixty-three".