82637977 has 2 divisors, whose sum is σ = 82637978. Its totient is φ = 82637976.

The previous prime is 82637963. The next prime is 82637999. The reversal of 82637977 is 77973628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81522841 + 1115136 = 9029^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 82637977 - 2¹⁵ = 82605209 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82637977.

It is not a weakly prime, because it can be changed into another prime (82637957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41318988 + 41318989.

It is an arithmetic number, because the mean of its divisors is an integer number (41318989).

Almost surely, 2^82637977 is an apocalyptic number.

It is an amenable number.

82637977 is a deficient number, since it is larger than the sum of its proper divisors (1).

82637977 is an equidigital number, since it uses as much as digits as its factorization.

82637977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 82637977 is about 9090.5432730943. The cubic root of 82637977 is about 435.5719380460.

The spelling of 82637977 in words is "eighty-two million, six hundred thirty-seven thousand, nine hundred seventy-seven".