2987997 has 24 divisors (see below), whose sum is σ = 4389120. Its totient is φ = 1805760.

The previous prime is 2987989. The next prime is 2988019. The reversal of 2987997 is 7997892.

It is a happy number.

It is not a de Polignac number, because 2987997 - 2³ = 2987989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2987947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33529 + ... + 33617.

It is an arithmetic number, because the mean of its divisors is an integer number (182880).

2^2987997 is an apocalyptic number.

It is an amenable number.

2987997 is a deficient number, since it is larger than the sum of its proper divisors (1401123).

2987997 is a wasteful number, since it uses less digits than its factorization.

2987997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 142 counting only the distinct ones).

The product of its digits is 571536, while the sum is 51.

The square root of 2987997 is about 1728.5823671437. The cubic root of 2987997 is about 144.0323519132.

The spelling of 2987997 in words is "two million, nine hundred eighty-seven thousand, nine hundred ninety-seven".