71066899 has 16 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 66493440.

The previous prime is 71066893. The next prime is 71066903. The reversal of 71066899 is 99866017.

It is not a de Polignac number, because 71066899 - 2²⁵ = 37512467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71066893) 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, 119547 + ... + 120139.

It is an arithmetic number, because the mean of its divisors is an integer number (4740120).

Almost surely, 2^71066899 is an apocalyptic number.

71066899 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

71066899 is a deficient number, since it is larger than the sum of its proper divisors (4775021).

71066899 is a wasteful number, since it uses less digits than its factorization.

71066899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 71066899 is about 8430.1185638163. The cubic root of 71066899 is about 414.2117888422.

The spelling of 71066899 in words is "seventy-one million, sixty-six thousand, eight hundred ninety-nine".