82560786 has 80 divisors (see below), whose sum is σ = 210545568. Its totient is φ = 21403200.

The previous prime is 82560739. The next prime is 82560787. The reversal of 82560786 is 68706528.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (82560787) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 158206 + ... + 158726.

Almost surely, 2^82560786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82560786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105272784).

82560786 is an abundant number, since it is smaller than the sum of its proper divisors (127984782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82560786 is a wasteful number, since it uses less digits than its factorization.

82560786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 82560786 is about 9086.2966053283. The cubic root of 82560786 is about 435.4362752075.

The spelling of 82560786 in words is "eighty-two million, five hundred sixty thousand, seven hundred eighty-six".