9071997 has 8 divisors (see below), whose sum is σ = 13195680. Its totient is φ = 5498160.

The previous prime is 9071989. The next prime is 9072031. The reversal of 9071997 is 7991709.

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

It is not a de Polignac number, because 9071997 - 2³ = 9071989 is a prime.

It is a super-2 number, since 2×9071997² = 164602259136018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9071917) 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, 137422 + ... + 137487.

It is an arithmetic number, because the mean of its divisors is an integer number (1649460).

Almost surely, 2^9071997 is an apocalyptic number.

It is an amenable number.

9071997 is a deficient number, since it is larger than the sum of its proper divisors (4123683).

9071997 is a wasteful number, since it uses less digits than its factorization.

9071997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274923.

The product of its (nonzero) digits is 35721, while the sum is 42.

The square root of 9071997 is about 3011.9755975107. The cubic root of 9071997 is about 208.5615757036.

The spelling of 9071997 in words is "nine million, seventy-one thousand, nine hundred ninety-seven".