2807997 has 4 divisors (see below), whose sum is σ = 3744000. Its totient is φ = 1871996.

The previous prime is 2807977. The next prime is 2808007. The reversal of 2807997 is 7997082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2807997 - 2⁶ = 2807933 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2807927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467997 + ... + 468002.

It is an arithmetic number, because the mean of its divisors is an integer number (936000).

2^2807997 is an apocalyptic number.

It is an amenable number.

2807997 is a deficient number, since it is larger than the sum of its proper divisors (936003).

2807997 is an equidigital number, since it uses as much as digits as its factorization.

2807997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936002.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 2807997 is about 1675.7079101084. The cubic root of 2807997 is about 141.0800310210.

The spelling of 2807997 in words is "two million, eight hundred seven thousand, nine hundred ninety-seven".