82779485 has 16 divisors (see below), whose sum is σ = 108172800. Its totient is φ = 60572736.

The previous prime is 82779467. The next prime is 82779491. The reversal of 82779485 is 58497728.

It is a cyclic number.

It is not a de Polignac number, because 82779485 - 2¹⁶ = 82713949 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12269 + ... + 17778.

It is an arithmetic number, because the mean of its divisors is an integer number (6760800).

Almost surely, 2^82779485 is an apocalyptic number.

It is an amenable number.

82779485 is a deficient number, since it is larger than the sum of its proper divisors (25393315).

82779485 is a wasteful number, since it uses less digits than its factorization.

82779485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30100.

The product of its digits is 1128960, while the sum is 50.

The square root of 82779485 is about 9098.3231971611. The cubic root of 82779485 is about 435.8204184963.

The spelling of 82779485 in words is "eighty-two million, seven hundred seventy-nine thousand, four hundred eighty-five".