82665530 has 16 divisors (see below), whose sum is σ = 153598464. Its totient is φ = 31999440.

The previous prime is 82665503. The next prime is 82665533. The reversal of 82665530 is 3556628.

It is not an unprimeable number, because it can be changed into a prime (82665533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133022 + ... + 133641.

It is an arithmetic number, because the mean of its divisors is an integer number (9599904).

Almost surely, 2^82665530 is an apocalyptic number.

82665530 is a deficient number, since it is larger than the sum of its proper divisors (70932934).

82665530 is a wasteful number, since it uses less digits than its factorization.

82665530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266701.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 82665530 is about 9092.0586227763. The cubic root of 82665530 is about 435.6203418610.

The spelling of 82665530 in words is "eighty-two million, six hundred sixty-five thousand, five hundred thirty".