82605311 has 4 divisors (see below), whose sum is σ = 85453800. Its totient is φ = 79756824.

The previous prime is 82605307. The next prime is 82605319. The reversal of 82605311 is 11350628.

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 82605311 - 2² = 82605307 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 (82605319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424201 + ... + 1424258.

It is an arithmetic number, because the mean of its divisors is an integer number (21363450).

Almost surely, 2^82605311 is an apocalyptic number.

82605311 is a deficient number, since it is larger than the sum of its proper divisors (2848489).

82605311 is a wasteful number, since it uses less digits than its factorization.

82605311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848488.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 82605311 is about 9088.7463932052. The cubic root of 82605311 is about 435.5145380118.

Adding to 82605311 its reverse (11350628), we get a palindrome (93955939).

The spelling of 82605311 in words is "eighty-two million, six hundred five thousand, three hundred eleven".