82660312 has 32 divisors (see below), whose sum is σ = 179781120. Its totient is φ = 34895520.

The previous prime is 82660271. The next prime is 82660313. The reversal of 82660312 is 21306628.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7264 + ... + 14767.

It is an arithmetic number, because the mean of its divisors is an integer number (5618160).

Almost surely, 2^82660312 is an apocalyptic number.

It is an amenable number.

82660312 is an abundant number, since it is smaller than the sum of its proper divisors (97120808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82660312 is a wasteful number, since it uses less digits than its factorization.

82660312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22111 (or 22107 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 82660312 is about 9091.7716645327. The cubic root of 82660312 is about 435.6111759496.

The spelling of 82660312 in words is "eighty-two million, six hundred sixty thousand, three hundred twelve".