71322791 has 8 divisors (see below), whose sum is σ = 73525440. Its totient is φ = 69134688.

The previous prime is 71322787. The next prime is 71322809. The reversal of 71322791 is 19722317.

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 71322791 - 2² = 71322787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71322721) 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, 6770 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (9190680).

Almost surely, 2^71322791 is an apocalyptic number.

71322791 is a deficient number, since it is larger than the sum of its proper divisors (2202649).

71322791 is a wasteful number, since it uses less digits than its factorization.

71322791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273.

The product of its digits is 5292, while the sum is 32.

The square root of 71322791 is about 8445.2821740899. The cubic root of 71322791 is about 414.7083468780.

The spelling of 71322791 in words is "seventy-one million, three hundred twenty-two thousand, seven hundred ninety-one".