82563975 has 72 divisors (see below), whose sum is σ = 165041520. Its totient is φ = 40227840.

The previous prime is 82563967. The next prime is 82563991. The reversal of 82563975 is 57936528.

It is a happy number.

82563975 is a `hidden beast` number, since 8 + 2 + 5 + 639 + 7 + 5 = 666.

It is not a de Polignac number, because 82563975 - 2³ = 82563967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 82563975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 851127 + ... + 851223.

Almost surely, 2^82563975 is an apocalyptic number.

82563975 is a deficient number, since it is larger than the sum of its proper divisors (82477545).

82563975 is a wasteful number, since it uses less digits than its factorization.

82563975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 118 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 82563975 is about 9086.4720876697. The cubic root of 82563975 is about 435.4418815349.

It can be divided in two parts, 82563 and 975, that added together give a palindrome (83538).

The spelling of 82563975 in words is "eighty-two million, five hundred sixty-three thousand, nine hundred seventy-five".