82750905 has 12 divisors (see below), whose sum is σ = 143434980. Its totient is φ = 44133792.

The previous prime is 82750903. The next prime is 82750919. The reversal of 82750905 is 50905728.

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 53978409 = 5364^2 + 7347^2 .

It is not a de Polignac number, because 82750905 - 2¹ = 82750903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82750905.

It is not an unprimeable number, because it can be changed into a prime (82750903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919410 + ... + 919499.

It is an arithmetic number, because the mean of its divisors is an integer number (11952915).

Almost surely, 2^82750905 is an apocalyptic number.

It is an amenable number.

82750905 is a deficient number, since it is larger than the sum of its proper divisors (60684075).

82750905 is a wasteful number, since it uses less digits than its factorization.

82750905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838920 (or 1838917 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 82750905 is about 9096.7524424929. The cubic root of 82750905 is about 435.7702563847.

The spelling of 82750905 in words is "eighty-two million, seven hundred fifty thousand, nine hundred five".