2985985 has 8 divisors (see below), whose sum is σ = 3706920. Its totient is φ = 2306304.

The previous prime is 2985979. The next prime is 2985991. The reversal of 2985985 is 5895892.

2985985 is nontrivially palindromic in base 12.

It is a Cunningham number, because it is equal to 12⁶+1.

It is an interprime number because it is at equal distance from previous prime (2985979) and next prime (2985991).

It can be written as a sum of positive squares in 4 ways, for example, as 1073296 + 1912689 = 1036^2 + 1383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2985985 - 2⁵ = 2985953 is a prime.

It is a super-2 number, since 2×2985985² = 17832212840450, which contains 22 as substring.

2985985 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10152 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (463365).

It is a Proth number, since it is equal to 729 ⋅ 2¹² + 1 and 729 < 2¹².

2^2985985 is an apocalyptic number.

It is an amenable number.

2985985 is a deficient number, since it is larger than the sum of its proper divisors (720935).

2985985 is a wasteful number, since it uses less digits than its factorization.

2985985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20627.

The product of its digits is 259200, while the sum is 46.

The square root of 2985985 is about 1728.0002893518. Note that the first 3 decimals coincide. The cubic root of 2985985 is about 144.0000160751. Note that the first 4 decimals are identical.

The spelling of 2985985 in words is "two million, nine hundred eighty-five thousand, nine hundred eighty-five".