2891659 has 4 divisors (see below), whose sum is σ = 2912904. Its totient is φ = 2870416.

The previous prime is 2891657. The next prime is 2891671. The reversal of 2891659 is 9561982.

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

It is a cyclic number.

It is not a de Polignac number, because 2891659 - 2¹ = 2891657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2891657) 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, 10417 + ... + 10690.

It is an arithmetic number, because the mean of its divisors is an integer number (728226).

2^2891659 is an apocalyptic number.

2891659 is a deficient number, since it is larger than the sum of its proper divisors (21245).

2891659 is a wasteful number, since it uses less digits than its factorization.

2891659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244.

The product of its digits is 38880, while the sum is 40.

The square root of 2891659 is about 1700.4878711711. The cubic root of 2891659 is about 142.4674635884.

The spelling of 2891659 in words is "two million, eight hundred ninety-one thousand, six hundred fifty-nine".