81607106 has 32 divisors (see below), whose sum is σ = 149610240. Its totient is φ = 32587776.

The previous prime is 81607093. The next prime is 81607111. The reversal of 81607106 is 60170618.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22850 + ... + 26178.

It is an arithmetic number, because the mean of its divisors is an integer number (4675320).

Almost surely, 2^81607106 is an apocalyptic number.

81607106 is a deficient number, since it is larger than the sum of its proper divisors (68003134).

81607106 is a wasteful number, since it uses less digits than its factorization.

81607106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 81607106 is about 9033.6651476574. The cubic root of 81607106 is about 433.7531672097.

The spelling of 81607106 in words is "eighty-one million, six hundred seven thousand, one hundred six".