99997071 has 8 divisors (see below), whose sum is σ = 133837440. Its totient is φ = 66410712.

The previous prime is 99997069. The next prime is 99997081. The reversal of 99997071 is 17079999.

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

It is not a de Polignac number, because 99997071 - 2¹ = 99997069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99997081) 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, 62581 + ... + 64158.

It is an arithmetic number, because the mean of its divisors is an integer number (16729680).

Almost surely, 2^99997071 is an apocalyptic number.

99997071 is a deficient number, since it is larger than the sum of its proper divisors (33840369).

99997071 is a wasteful number, since it uses less digits than its factorization.

99997071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127005.

The product of its (nonzero) digits is 321489, while the sum is 51.

The square root of 99997071 is about 9999.8535489276. The cubic root of 99997071 is about 464.1543515791.

The spelling of 99997071 in words is "ninety-nine million, nine hundred ninety-seven thousand, seventy-one".