81427606 has 16 divisors (see below), whose sum is σ = 132426000. Its totient is φ = 37327968.

The previous prime is 81427589. The next prime is 81427627. The reversal of 81427606 is 60672418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6636 + ... + 14383.

It is an arithmetic number, because the mean of its divisors is an integer number (8276625).

Almost surely, 2^81427606 is an apocalyptic number.

81427606 is a deficient number, since it is larger than the sum of its proper divisors (50998394).

81427606 is a wasteful number, since it uses less digits than its factorization.

81427606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21183.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 81427606 is about 9023.7246190251. The cubic root of 81427606 is about 433.4349112299.

The spelling of 81427606 in words is "eighty-one million, four hundred twenty-seven thousand, six hundred six".