82358905 has 4 divisors (see below), whose sum is σ = 98830692. Its totient is φ = 65887120.

The previous prime is 82358891. The next prime is 82358921. The reversal of 82358905 is 50985328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 61638201 = 4552^2 + 7851^2 .

It is not a de Polignac number, because 82358905 - 2⁷ = 82358777 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8235886 + ... + 8235895.

It is an arithmetic number, because the mean of its divisors is an integer number (24707673).

Almost surely, 2^82358905 is an apocalyptic number.

It is an amenable number.

82358905 is a deficient number, since it is larger than the sum of its proper divisors (16471787).

82358905 is a wasteful number, since it uses less digits than its factorization.

82358905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16471786.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 82358905 is about 9075.1807144541. The cubic root of 82358905 is about 435.0810700181.

The spelling of 82358905 in words is "eighty-two million, three hundred fifty-eight thousand, nine hundred five".