7873997 has 4 divisors (see below), whose sum is σ = 7884540. Its totient is φ = 7863456.

The previous prime is 7873979. The next prime is 7874011. The reversal of 7873997 is 7993787.

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 6895876 + 978121 = 2626^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 7873997 - 2¹⁴ = 7857613 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 (7873937) 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, 4058 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (1971135).

Almost surely, 2^7873997 is an apocalyptic number.

It is an amenable number.

7873997 is a deficient number, since it is larger than the sum of its proper divisors (10543).

7873997 is an equidigital number, since it uses as much as digits as its factorization.

7873997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542.

The product of its digits is 666792, while the sum is 50.

The square root of 7873997 is about 2806.0643257060. The cubic root of 7873997 is about 198.9444134872.

The spelling of 7873997 in words is "seven million, eight hundred seventy-three thousand, nine hundred ninety-seven".