82606519 has 4 divisors (see below), whose sum is σ = 87465744. Its totient is φ = 77747296.

The previous prime is 82606499. The next prime is 82606567. The reversal of 82606519 is 91560628.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82606519 is a prime.

It is a super-2 number, since 2×82606519² = 13647673962594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82606219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2429587 + ... + 2429620.

It is an arithmetic number, because the mean of its divisors is an integer number (21866436).

Almost surely, 2^82606519 is an apocalyptic number.

82606519 is a deficient number, since it is larger than the sum of its proper divisors (4859225).

82606519 is a wasteful number, since it uses less digits than its factorization.

82606519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859224.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 82606519 is about 9088.8128487718. The cubic root of 82606519 is about 435.5166609544.

The spelling of 82606519 in words is "eighty-two million, six hundred six thousand, five hundred nineteen".