2997985 has 4 divisors (see below), whose sum is σ = 3597588. Its totient is φ = 2398384.

The previous prime is 2997977. The next prime is 2997997. The reversal of 2997985 is 5897992.

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 321489 + 2676496 = 567^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2997985 - 2³ = 2997977 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2997985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299794 + ... + 299803.

It is an arithmetic number, because the mean of its divisors is an integer number (899397).

2^2997985 is an apocalyptic number.

It is an amenable number.

2997985 is a deficient number, since it is larger than the sum of its proper divisors (599603).

2997985 is an equidigital number, since it uses as much as digits as its factorization.

2997985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599602.

The product of its digits is 408240, while the sum is 49.

The square root of 2997985 is about 1731.4690294660. The cubic root of 2997985 is about 144.1926594332.

The spelling of 2997985 in words is "two million, nine hundred ninety-seven thousand, nine hundred eighty-five".