7980197 has 4 divisors (see below), whose sum is σ = 8195916. Its totient is φ = 7764480.

The previous prime is 7980179. The next prime is 7980221. The reversal of 7980197 is 7910897.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4990756 + 2989441 = 2234^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 7980197 - 2¹⁰ = 7979173 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 (7980697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107804 + ... + 107877.

It is an arithmetic number, because the mean of its divisors is an integer number (2048979).

Almost surely, 2^7980197 is an apocalyptic number.

It is an amenable number.

7980197 is a deficient number, since it is larger than the sum of its proper divisors (215719).

7980197 is a wasteful number, since it uses less digits than its factorization.

7980197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215718.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 7980197 is about 2824.9242467719. The cubic root of 7980197 is about 199.8348386462.

The spelling of 7980197 in words is "seven million, nine hundred eighty thousand, one hundred ninety-seven".