82891611 has 24 divisors (see below), whose sum is σ = 130903344. Its totient is φ = 50127360.

The previous prime is 82891607. The next prime is 82891631. The reversal of 82891611 is 11619828.

It is not a de Polignac number, because 82891611 - 2² = 82891607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82891631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84355 + ... + 85331.

It is an arithmetic number, because the mean of its divisors is an integer number (5454306).

Almost surely, 2^82891611 is an apocalyptic number.

82891611 is a deficient number, since it is larger than the sum of its proper divisors (48011733).

82891611 is a wasteful number, since it uses less digits than its factorization.

82891611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1848 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 82891611 is about 9104.4830166243. The cubic root of 82891611 is about 436.0171047213.

The spelling of 82891611 in words is "eighty-two million, eight hundred ninety-one thousand, six hundred eleven".