71090033 has 12 divisors (see below), whose sum is σ = 86293440. Its totient is φ = 58284072.

The previous prime is 71090017. The next prime is 71090053. The reversal of 71090033 is 33009017.

It is not a de Polignac number, because 71090033 - 2⁴ = 71090017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71089990 and 71090008.

It is not an unprimeable number, because it can be changed into a prime (71090003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30413 + ... + 32666.

It is an arithmetic number, because the mean of its divisors is an integer number (7191120).

Almost surely, 2^71090033 is an apocalyptic number.

It is an amenable number.

71090033 is a deficient number, since it is larger than the sum of its proper divisors (15203407).

71090033 is a wasteful number, since it uses less digits than its factorization.

71090033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63116 (or 63109 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 71090033 is about 8431.4905562421. The cubic root of 71090033 is about 414.2567292954.

The spelling of 71090033 in words is "seventy-one million, ninety thousand, thirty-three".