82618751 has 4 divisors (see below), whose sum is σ = 85283904. Its totient is φ = 79953600.

The previous prime is 82618747. The next prime is 82618763. The reversal of 82618751 is 15781628.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82618751 - 2² = 82618747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82618721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332530 + ... + 1332591.

It is an arithmetic number, because the mean of its divisors is an integer number (21320976).

Almost surely, 2^82618751 is an apocalyptic number.

82618751 is a deficient number, since it is larger than the sum of its proper divisors (2665153).

82618751 is a wasteful number, since it uses less digits than its factorization.

82618751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665152.

The product of its digits is 26880, while the sum is 38.

The square root of 82618751 is about 9089.4857390284. The cubic root of 82618751 is about 435.5381563397.

The spelling of 82618751 in words is "eighty-two million, six hundred eighteen thousand, seven hundred fifty-one".