2906885 has 4 divisors (see below), whose sum is σ = 3488268. Its totient is φ = 2325504.

The previous prime is 2906879. The next prime is 2906887. The reversal of 2906885 is 5886092.

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 743044 + 2163841 = 862^2 + 1471^2 .

It is a cyclic number.

It is not a de Polignac number, because 2906885 - 2¹² = 2902789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2906887) 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, 290684 + ... + 290693.

It is an arithmetic number, because the mean of its divisors is an integer number (872067).

2^2906885 is an apocalyptic number.

It is an amenable number.

2906885 is a deficient number, since it is larger than the sum of its proper divisors (581383).

2906885 is an equidigital number, since it uses as much as digits as its factorization.

2906885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581382.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 2906885 is about 1704.9589437872. The cubic root of 2906885 is about 142.7170796257.

The spelling of 2906885 in words is "two million, nine hundred six thousand, eight hundred eighty-five".