2904645 has 16 divisors (see below), whose sum is σ = 4761792. Its totient is φ = 1511040.

The previous prime is 2904641. The next prime is 2904653. The reversal of 2904645 is 5464092.

It is not a de Polignac number, because 2904645 - 2² = 2904641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2904641) 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, 1747 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (297612).

2^2904645 is an apocalyptic number.

It is an amenable number.

2904645 is a deficient number, since it is larger than the sum of its proper divisors (1857147).

2904645 is a wasteful number, since it uses less digits than its factorization.

2904645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2904645 is about 1704.3019098740. The cubic root of 2904645 is about 142.6804116909.

It can be divided in two parts, 2904 and 645, that multiplied together give a triangular number (1873080 = T₁₉₃₅).

The spelling of 2904645 in words is "two million, nine hundred four thousand, six hundred forty-five".