82090565 has 8 divisors (see below), whose sum is σ = 102791808. Its totient is φ = 62817040.

The previous prime is 82090553. The next prime is 82090579. The reversal of 82090565 is 56509028.

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

It is a de Polignac number, because none of the positive numbers 2^k-82090565 is a prime.

It is a super-3 number, since 3×82090565³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356801 + ... + 357030.

It is an arithmetic number, because the mean of its divisors is an integer number (12848976).

Almost surely, 2^82090565 is an apocalyptic number.

It is an amenable number.

82090565 is a deficient number, since it is larger than the sum of its proper divisors (20701243).

82090565 is a wasteful number, since it uses less digits than its factorization.

82090565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713859.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 82090565 is about 9060.3843737449. The cubic root of 82090565 is about 434.6080319927.

The spelling of 82090565 in words is "eighty-two million, ninety thousand, five hundred sixty-five".