2873645 has 8 divisors (see below), whose sum is σ = 3496056. Its totient is φ = 2267136.

The previous prime is 2873641. The next prime is 2873657. The reversal of 2873645 is 5463782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7396 + 2866249 = 86^2 + 1693^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2873645 - 2² = 2873641 is a prime.

It is a super-3 number, since 3×2873645³ = 71190263827808433375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2873641) 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 7 ways as a sum of consecutive naturals, for example, 3572 + ... + 4301.

It is an arithmetic number, because the mean of its divisors is an integer number (437007).

2^2873645 is an apocalyptic number.

It is an amenable number.

2873645 is a deficient number, since it is larger than the sum of its proper divisors (622411).

2873645 is an equidigital number, since it uses as much as digits as its factorization.

2873645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7951.

The product of its digits is 40320, while the sum is 35.

The square root of 2873645 is about 1695.1828809895. The cubic root of 2873645 is about 142.1710067010.

The spelling of 2873645 in words is "two million, eight hundred seventy-three thousand, six hundred forty-five".