71270891 has 8 divisors (see below), whose sum is σ = 73713024. Its totient is φ = 68837760.

The previous prime is 71270887. The next prime is 71270897. The reversal of 71270891 is 19807217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71270891 - 2² = 71270887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71270897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16445 + ... + 20321.

It is an arithmetic number, because the mean of its divisors is an integer number (9214128).

Almost surely, 2^71270891 is an apocalyptic number.

71270891 is a deficient number, since it is larger than the sum of its proper divisors (2442133).

71270891 is a wasteful number, since it uses less digits than its factorization.

71270891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 71270891 is about 8442.2088934117. The cubic root of 71270891 is about 414.6077311388.

The spelling of 71270891 in words is "seventy-one million, two hundred seventy thousand, eight hundred ninety-one".