2985987 has 4 divisors (see below), whose sum is σ = 3981320. Its totient is φ = 1990656.

The previous prime is 2985979. The next prime is 2985991. The reversal of 2985987 is 7895892.

It is a happy number.

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

It is not a de Polignac number, because 2985987 - 2³ = 2985979 is a prime.

It is a super-2 number, since 2×2985987² = 17832236728338, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2985947) 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, 497662 + ... + 497667.

It is an arithmetic number, because the mean of its divisors is an integer number (995330).

2^2985987 is an apocalyptic number.

2985987 is a deficient number, since it is larger than the sum of its proper divisors (995333).

2985987 is an equidigital number, since it uses as much as digits as its factorization.

2985987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995332.

The product of its digits is 362880, while the sum is 48.

The square root of 2985987 is about 1728.0008680553. Note that the first 3 decimals coincide. The cubic root of 2985987 is about 144.0000482253. Note that the first 4 decimals are identical.

The spelling of 2985987 in words is "two million, nine hundred eighty-five thousand, nine hundred eighty-seven".