82137865 has 8 divisors (see below), whose sum is σ = 99523008. Its totient is φ = 65071920.

The previous prime is 82137851. The next prime is 82137877. The reversal of 82137865 is 56873128.

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

It is not a de Polignac number, because 82137865 - 2¹³ = 82129673 is a prime.

It is a Duffinian 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, 79231 + ... + 80260.

It is an arithmetic number, because the mean of its divisors is an integer number (12440376).

Almost surely, 2^82137865 is an apocalyptic number.

It is an amenable number.

82137865 is a deficient number, since it is larger than the sum of its proper divisors (17385143).

82137865 is a wasteful number, since it uses less digits than its factorization.

82137865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159599.

The product of its digits is 80640, while the sum is 40.

The square root of 82137865 is about 9062.9942623837. The cubic root of 82137865 is about 434.6914886519.

The spelling of 82137865 in words is "eighty-two million, one hundred thirty-seven thousand, eight hundred sixty-five".