81082606 has 16 divisors (see below), whose sum is σ = 135767808. Its totient is φ = 35998200.

The previous prime is 81082597. The next prime is 81082607. The reversal of 81082606 is 60628018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81082607) 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, 41910 + ... + 43801.

It is an arithmetic number, because the mean of its divisors is an integer number (8485488).

Almost surely, 2^81082606 is an apocalyptic number.

81082606 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

81082606 is a deficient number, since it is larger than the sum of its proper divisors (54685202).

81082606 is a wasteful number, since it uses less digits than its factorization.

81082606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85767.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 81082606 is about 9004.5880527651. The cubic root of 81082606 is about 432.8219056487.

The spelling of 81082606 in words is "eighty-one million, eighty-two thousand, six hundred six".