82700505 has 12 divisors (see below), whose sum is σ = 143347620. Its totient is φ = 44106912.

The previous prime is 82700503. The next prime is 82700531. The reversal of 82700505 is 50500728.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64064016 + 18636489 = 8004^2 + 4317^2 .

It is not a de Polignac number, because 82700505 - 2¹ = 82700503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82700503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918850 + ... + 918939.

It is an arithmetic number, because the mean of its divisors is an integer number (11945635).

Almost surely, 2^82700505 is an apocalyptic number.

It is an amenable number.

82700505 is a deficient number, since it is larger than the sum of its proper divisors (60647115).

82700505 is a wasteful number, since it uses less digits than its factorization.

82700505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837800 (or 1837797 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 82700505 is about 9093.9818011694. The cubic root of 82700505 is about 435.6817688074.

The spelling of 82700505 in words is "eighty-two million, seven hundred thousand, five hundred five".