82677861 has 32 divisors (see below), whose sum is σ = 140555520. Its totient is φ = 47051712.

The previous prime is 82677857. The next prime is 82677883. The reversal of 82677861 is 16877628.

It is not a de Polignac number, because 82677861 - 2² = 82677857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82677461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54631 + ... + 56123.

It is an arithmetic number, because the mean of its divisors is an integer number (4392360).

Almost surely, 2^82677861 is an apocalyptic number.

It is an amenable number.

82677861 is a deficient number, since it is larger than the sum of its proper divisors (57877659).

82677861 is a wasteful number, since it uses less digits than its factorization.

82677861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802 (or 1796 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 82677861 is about 9092.7367167427. The cubic root of 82677861 is about 435.6420008982.

It can be divided in two parts, 82677 and 861, that added together give a palindrome (83538).

The spelling of 82677861 in words is "eighty-two million, six hundred seventy-seven thousand, eight hundred sixty-one".