82628641 has 2 divisors, whose sum is σ = 82628642. Its totient is φ = 82628640.

The previous prime is 82628633. The next prime is 82628669. The reversal of 82628641 is 14682628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 36048016 = 6825^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 82628641 - 2³ = 82628633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82628641.

It is not a weakly prime, because it can be changed into another prime (82628341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41314320 + 41314321.

It is an arithmetic number, because the mean of its divisors is an integer number (41314321).

Almost surely, 2^82628641 is an apocalyptic number.

It is an amenable number.

82628641 is a deficient number, since it is larger than the sum of its proper divisors (1).

82628641 is an equidigital number, since it uses as much as digits as its factorization.

82628641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 82628641 is about 9090.0297579271. The cubic root of 82628641 is about 435.5555345598. Note that the first 4 decimals are identical.

The spelling of 82628641 in words is "eighty-two million, six hundred twenty-eight thousand, six hundred forty-one".