82669550 has 24 divisors (see below), whose sum is σ = 155719200. Its totient is φ = 32647680.

The previous prime is 82669549. The next prime is 82669553. The reversal of 82669550 is 5596628.

It is a junction number, because it is equal to n+sod(n) for n = 82669498 and 82669507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82669553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6515 + ... + 14414.

It is an arithmetic number, because the mean of its divisors is an integer number (6488300).

Almost surely, 2^82669550 is an apocalyptic number.

82669550 is a deficient number, since it is larger than the sum of its proper divisors (73049650).

82669550 is a wasteful number, since it uses less digits than its factorization.

82669550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020 (or 21015 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 82669550 is about 9092.2796921344. The cubic root of 82669550 is about 435.6274031088.

The spelling of 82669550 in words is "eighty-two million, six hundred sixty-nine thousand, five hundred fifty".