82814565 has 16 divisors (see below), whose sum is σ = 140298048. Its totient is φ = 41569536.

The previous prime is 82814561. The next prime is 82814569. The reversal of 82814565 is 56541828.

It is an interprime number because it is at equal distance from previous prime (82814561) and next prime (82814569).

It is not a de Polignac number, because 82814565 - 2² = 82814561 is a prime.

It is a super-2 number, since 2×82814565² = 13716504352278450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82814561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162127 + ... + 162636.

It is an arithmetic number, because the mean of its divisors is an integer number (8768628).

Almost surely, 2^82814565 is an apocalyptic number.

82814565 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82814565 is a deficient number, since it is larger than the sum of its proper divisors (57483483).

82814565 is a wasteful number, since it uses less digits than its factorization.

82814565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324788.

The product of its digits is 76800, while the sum is 39.

The square root of 82814565 is about 9100.2508207192. The cubic root of 82814565 is about 435.8819732851.

The spelling of 82814565 in words is "eighty-two million, eight hundred fourteen thousand, five hundred sixty-five".