2801643 has 8 divisors (see below), whose sum is σ = 4022928. Its totient is φ = 1724064.

The previous prime is 2801641. The next prime is 2801681. The reversal of 2801643 is 3461082.

It is a happy number.

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

It is not a de Polignac number, because 2801643 - 2¹ = 2801641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2801641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35880 + ... + 35957.

It is an arithmetic number, because the mean of its divisors is an integer number (502866).

2^2801643 is an apocalyptic number.

2801643 is a deficient number, since it is larger than the sum of its proper divisors (1221285).

2801643 is a wasteful number, since it uses less digits than its factorization.

2801643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71853.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2801643 is about 1673.8109212214. The cubic root of 2801643 is about 140.9735376123.

The spelling of 2801643 in words is "two million, eight hundred one thousand, six hundred forty-three".