7997197 has 8 divisors (see below), whose sum is σ = 8636544. Its totient is φ = 7361328.

The previous prime is 7997167. The next prime is 7997201. The reversal of 7997197 is 7917997.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-7997197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7997197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5928 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^7997197 is an apocalyptic number.

It is an amenable number.

7997197 is a deficient number, since it is larger than the sum of its proper divisors (639347).

7997197 is a wasteful number, since it uses less digits than its factorization.

7997197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its digits is 250047, while the sum is 49.

The square root of 7997197 is about 2827.9315762585. The cubic root of 7997197 is about 199.9766389381.

The spelling of 7997197 in words is "seven million, nine hundred ninety-seven thousand, one hundred ninety-seven".