82786451 has 4 divisors (see below), whose sum is σ = 90312504. Its totient is φ = 75260400.

The previous prime is 82786433. The next prime is 82786463. The reversal of 82786451 is 15468728.

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

It is a cyclic number.

It is not a de Polignac number, because 82786451 - 2¹⁴ = 82770067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82786399 and 82786408.

It is not an unprimeable number, because it can be changed into a prime (82786471) 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, 3763010 + ... + 3763031.

It is an arithmetic number, because the mean of its divisors is an integer number (22578126).

Almost surely, 2^82786451 is an apocalyptic number.

82786451 is a deficient number, since it is larger than the sum of its proper divisors (7526053).

82786451 is a wasteful number, since it uses less digits than its factorization.

82786451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7526052.

The product of its digits is 107520, while the sum is 41.

The square root of 82786451 is about 9098.7060069001. The cubic root of 82786451 is about 435.8326431028.

It can be divided in two parts, 827 and 86451, that added together give a palindrome (87278).

The spelling of 82786451 in words is "eighty-two million, seven hundred eighty-six thousand, four hundred fifty-one".