82660311 has 16 divisors (see below), whose sum is σ = 122615520. Its totient is φ = 55036800.

The previous prime is 82660271. The next prime is 82660313. The reversal of 82660311 is 11306628.

It is not a de Polignac number, because 82660311 - 2⁶ = 82660247 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82660313) 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 15 ways as a sum of consecutive naturals, for example, 28111 + ... + 30911.

It is an arithmetic number, because the mean of its divisors is an integer number (7663470).

Almost surely, 2^82660311 is an apocalyptic number.

82660311 is a deficient number, since it is larger than the sum of its proper divisors (39955209).

82660311 is a wasteful number, since it uses less digits than its factorization.

82660311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903 (or 3897 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 82660311 is about 9091.7716095379. The cubic root of 82660311 is about 435.6111741929.

Adding to 82660311 its reverse (11306628), we get a palindrome (93966939).

The spelling of 82660311 in words is "eighty-two million, six hundred sixty thousand, three hundred eleven".