2985906 has 64 divisors (see below), whose sum is σ = 7796736. Its totient is φ = 739200.

The previous prime is 2985901. The next prime is 2985943. The reversal of 2985906 is 6095892.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2985901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10486 + ... + 10766.

It is an arithmetic number, because the mean of its divisors is an integer number (121824).

2^2985906 is an apocalyptic number.

2985906 is the 924-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2985906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3898368).

2985906 is an abundant number, since it is smaller than the sum of its proper divisors (4810830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2985906 is a wasteful number, since it uses less digits than its factorization.

2985906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 2985906 is about 1727.9774304082. The cubic root of 2985906 is about 143.9987461311.

The spelling of 2985906 in words is "two million, nine hundred eighty-five thousand, nine hundred six".