2902645 has 4 divisors (see below), whose sum is σ = 3483180. Its totient is φ = 2322112.

The previous prime is 2902637. The next prime is 2902657. The reversal of 2902645 is 5462092.

2902645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1825201 + 1077444 = 1351^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 2902645 - 2³ = 2902637 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290260 + ... + 290269.

It is an arithmetic number, because the mean of its divisors is an integer number (870795).

2^2902645 is an apocalyptic number.

It is an amenable number.

2902645 is a deficient number, since it is larger than the sum of its proper divisors (580535).

2902645 is an equidigital number, since it uses as much as digits as its factorization.

2902645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580534.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2902645 is about 1703.7150583358. The cubic root of 2902645 is about 142.6476565299.

The spelling of 2902645 in words is "two million, nine hundred two thousand, six hundred forty-five".