82387513 has 8 divisors (see below), whose sum is σ = 88962048. Its totient is φ = 75846864.

The previous prime is 82387511. The next prime is 82387517. The reversal of 82387513 is 31578328.

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 82387513 - 2¹ = 82387511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82387511) 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, 3295 + ... + 13252.

It is an arithmetic number, because the mean of its divisors is an integer number (11120256).

Almost surely, 2^82387513 is an apocalyptic number.

It is an amenable number.

82387513 is a deficient number, since it is larger than the sum of its proper divisors (6574535).

82387513 is a wasteful number, since it uses less digits than its factorization.

82387513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16943.

The product of its digits is 40320, while the sum is 37.

The square root of 82387513 is about 9076.7567445647. The cubic root of 82387513 is about 435.1314404400.

It can be divided in two parts, 8238 and 7513, that added together give a palindrome (15751).

The spelling of 82387513 in words is "eighty-two million, three hundred eighty-seven thousand, five hundred thirteen".