82782645 has 32 divisors (see below), whose sum is σ = 145926144. Its totient is φ = 39739200.

The previous prime is 82782643. The next prime is 82782671. The reversal of 82782645 is 54628728.

It is a happy number.

It is not a de Polignac number, because 82782645 - 2¹ = 82782643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82782597 and 82782606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82782643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14560 + ... + 19430.

It is an arithmetic number, because the mean of its divisors is an integer number (4560192).

Almost surely, 2^82782645 is an apocalyptic number.

It is an amenable number.

82782645 is a deficient number, since it is larger than the sum of its proper divisors (63143499).

82782645 is a wasteful number, since it uses less digits than its factorization.

82782645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993.

The product of its digits is 215040, while the sum is 42.

The square root of 82782645 is about 9098.4968538765. The cubic root of 82782645 is about 435.8259640531.

The spelling of 82782645 in words is "eighty-two million, seven hundred eighty-two thousand, six hundred forty-five".