71333997 has 16 divisors (see below), whose sum is σ = 112448640. Its totient is φ = 39356352.

The previous prime is 71333987. The next prime is 71334031. The reversal of 71333997 is 79933317.

It is not a de Polignac number, because 71333997 - 2⁴ = 71333981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71333957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57958 + ... + 59175.

It is an arithmetic number, because the mean of its divisors is an integer number (7028040).

Almost surely, 2^71333997 is an apocalyptic number.

It is an amenable number.

71333997 is a deficient number, since it is larger than the sum of its proper divisors (41114643).

71333997 is a wasteful number, since it uses less digits than its factorization.

71333997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117172.

The product of its digits is 107163, while the sum is 42.

The square root of 71333997 is about 8445.9455953730. The cubic root of 71333997 is about 414.7300649399.

The spelling of 71333997 in words is "seventy-one million, three hundred thirty-three thousand, nine hundred ninety-seven".