82257765 has 8 divisors (see below), whose sum is σ = 131612448. Its totient is φ = 43870800.

The previous prime is 82257727. The next prime is 82257797. The reversal of 82257765 is 56775228.

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

It is not a de Polignac number, because 82257765 - 2⁶ = 82257701 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 2741911 + ... + 2741940.

It is an arithmetic number, because the mean of its divisors is an integer number (16451556).

Almost surely, 2^82257765 is an apocalyptic number.

It is an amenable number.

82257765 is a deficient number, since it is larger than the sum of its proper divisors (49354683).

82257765 is a wasteful number, since it uses less digits than its factorization.

82257765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483859.

The product of its digits is 235200, while the sum is 42.

The square root of 82257765 is about 9069.6066618128. The cubic root of 82257765 is about 434.9028981307.

The spelling of 82257765 in words is "eighty-two million, two hundred fifty-seven thousand, seven hundred sixty-five".