2903681 has 12 divisors (see below), whose sum is σ = 3318000. Its totient is φ = 2519880.

The previous prime is 2903671. The next prime is 2903689. The reversal of 2903681 is 1863092.

It is not a de Polignac number, because 2903681 - 2¹⁰ = 2902657 is a prime.

It is a super-2 number, since 2×2903681² = 16862726699522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2903689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5570 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (276500).

2^2903681 is an apocalyptic number.

It is an amenable number.

2903681 is a deficient number, since it is larger than the sum of its proper divisors (414319).

2903681 is a wasteful number, since it uses less digits than its factorization.

2903681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2903681 is about 1704.0190726632. The cubic root of 2903681 is about 142.6646255810.

The spelling of 2903681 in words is "two million, nine hundred three thousand, six hundred eighty-one".