2870643 has 4 divisors (see below), whose sum is σ = 3827528. Its totient is φ = 1913760.

The previous prime is 2870641. The next prime is 2870657. The reversal of 2870643 is 3460782.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2870643 - 2¹ = 2870641 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2870643.

It is not an unprimeable number, because it can be changed into a prime (2870641) 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, 478438 + ... + 478443.

It is an arithmetic number, because the mean of its divisors is an integer number (956882).

2^2870643 is an apocalyptic number.

2870643 is a deficient number, since it is larger than the sum of its proper divisors (956885).

2870643 is an equidigital number, since it uses as much as digits as its factorization.

2870643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956884.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2870643 is about 1694.2971994311. The cubic root of 2870643 is about 142.1214823665.

The spelling of 2870643 in words is "two million, eight hundred seventy thousand, six hundred forty-three".