7997213 has 8 divisors (see below), whose sum is σ = 9187200. Its totient is φ = 6819120.

The previous prime is 7997207. The next prime is 7997219. The reversal of 7997213 is 3127997.

It is an interprime number because it is at equal distance from previous prime (7997207) and next prime (7997219).

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

It is not a de Polignac number, because 7997213 - 2⁸ = 7996957 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 (7997219) 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, 1478 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (1148400).

Almost surely, 2^7997213 is an apocalyptic number.

It is an amenable number.

7997213 is a deficient number, since it is larger than the sum of its proper divisors (1189987).

7997213 is a wasteful number, since it uses less digits than its factorization.

7997213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947.

The product of its digits is 23814, while the sum is 38.

The square root of 7997213 is about 2827.9344051799. The cubic root of 7997213 is about 199.9767723025.

The spelling of 7997213 in words is "seven million, nine hundred ninety-seven thousand, two hundred thirteen".