82313785 has 4 divisors (see below), whose sum is σ = 98776548. Its totient is φ = 65851024.

The previous prime is 82313783. The next prime is 82313809. The reversal of 82313785 is 58731328.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22838841 + 59474944 = 4779^2 + 7712^2 .

It is a cyclic number.

It is not a de Polignac number, because 82313785 - 2¹ = 82313783 is a prime.

It is a super-3 number, since 3×82313785³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82313783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231374 + ... + 8231383.

It is an arithmetic number, because the mean of its divisors is an integer number (24694137).

Almost surely, 2^82313785 is an apocalyptic number.

It is an amenable number.

82313785 is a deficient number, since it is larger than the sum of its proper divisors (16462763).

82313785 is a wasteful number, since it uses less digits than its factorization.

82313785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16462762.

The product of its digits is 40320, while the sum is 37.

The square root of 82313785 is about 9072.6944729777. The cubic root of 82313785 is about 435.0016030240.

The spelling of 82313785 in words is "eighty-two million, three hundred thirteen thousand, seven hundred eighty-five".