82656019 has 4 divisors (see below), whose sum is σ = 84578296. Its totient is φ = 80733744.

The previous prime is 82656017. The next prime is 82656029. The reversal of 82656019 is 91065628.

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 82656019 - 2¹ = 82656017 is a prime.

It is a super-2 number, since 2×82656019² = 13664034953856722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82656017) 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, 961074 + ... + 961159.

It is an arithmetic number, because the mean of its divisors is an integer number (21144574).

Almost surely, 2^82656019 is an apocalyptic number.

82656019 is a deficient number, since it is larger than the sum of its proper divisors (1922277).

82656019 is a wasteful number, since it uses less digits than its factorization.

82656019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922276.

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

The square root of 82656019 is about 9091.5355688684. The cubic root of 82656019 is about 435.6036345991.

The spelling of 82656019 in words is "eighty-two million, six hundred fifty-six thousand, nineteen".