82774045 has 8 divisors (see below), whose sum is σ = 100312920. Its totient is φ = 65563200.

The previous prime is 82774031. The next prime is 82774049. The reversal of 82774045 is 54047728.

It can be written as a sum of positive squares in 4 ways, for example, as 29615364 + 53158681 = 5442^2 + 7291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82774045 - 2¹³ = 82765853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82773995 and 82774013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82774049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81450 + ... + 82459.

It is an arithmetic number, because the mean of its divisors is an integer number (12539115).

Almost surely, 2^82774045 is an apocalyptic number.

It is an amenable number.

82774045 is a deficient number, since it is larger than the sum of its proper divisors (17538875).

82774045 is a wasteful number, since it uses less digits than its factorization.

82774045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164015.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 82774045 is about 9098.0242360636. The cubic root of 82774045 is about 435.8108713844.

The spelling of 82774045 in words is "eighty-two million, seven hundred seventy-four thousand, forty-five".