2985861 has 16 divisors (see below), whose sum is σ = 4121280. Its totient is φ = 1921920.

The previous prime is 2985847. The next prime is 2985881. The reversal of 2985861 is 1685892.

It is not a de Polignac number, because 2985861 - 2⁷ = 2985733 is a prime.

It is a super-2 number, since 2×2985861² = 17830731822642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2985881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14046 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (257580).

2^2985861 is an apocalyptic number.

It is an amenable number.

2985861 is a deficient number, since it is larger than the sum of its proper divisors (1135419).

2985861 is a wasteful number, since it uses less digits than its factorization.

2985861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 34560, while the sum is 39.

The square root of 2985861 is about 1727.9644093557. The cubic root of 2985861 is about 143.9980227352.

The spelling of 2985861 in words is "two million, nine hundred eighty-five thousand, eight hundred sixty-one".