82665210 has 32 divisors (see below), whose sum is σ = 199671552. Its totient is φ = 21902400.

The previous prime is 82665199. The next prime is 82665211. The reversal of 82665210 is 1256628.

82665210 = T₁₆₆ + T₁₆₇ + ... + T₇₉₃.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (82665211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4066 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (6239736).

Almost surely, 2^82665210 is an apocalyptic number.

82665210 is an abundant number, since it is smaller than the sum of its proper divisors (117006342).

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

82665210 is a wasteful number, since it uses less digits than its factorization.

82665210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17718.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 82665210 is about 9092.0410249844. The cubic root of 82665210 is about 435.6197797618.

The spelling of 82665210 in words is "eighty-two million, six hundred sixty-five thousand, two hundred ten".