82135785 has 8 divisors (see below), whose sum is σ = 131417280. Its totient is φ = 43805744.

The previous prime is 82135741. The next prime is 82135787. The reversal of 82135785 is 58753128.

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

It is a cyclic number.

It is not a de Polignac number, because 82135785 - 2¹³ = 82127593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82135787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2737845 + ... + 2737874.

It is an arithmetic number, because the mean of its divisors is an integer number (16427160).

Almost surely, 2^82135785 is an apocalyptic number.

It is an amenable number.

82135785 is a deficient number, since it is larger than the sum of its proper divisors (49281495).

82135785 is a wasteful number, since it uses less digits than its factorization.

82135785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475727.

The product of its digits is 67200, while the sum is 39.

The square root of 82135785 is about 9062.8795092950. The cubic root of 82135785 is about 434.6878193497.

The spelling of 82135785 in words is "eighty-two million, one hundred thirty-five thousand, seven hundred eighty-five".