2850661 has 4 divisors (see below), whose sum is σ = 3109824. Its totient is φ = 2591500.

The previous prime is 2850647. The next prime is 2850697. The reversal of 2850661 is 1660582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2850661 - 2⁵ = 2850629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2850061) 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, 129565 + ... + 129586.

It is an arithmetic number, because the mean of its divisors is an integer number (777456).

2^2850661 is an apocalyptic number.

It is an amenable number.

2850661 is a deficient number, since it is larger than the sum of its proper divisors (259163).

2850661 is a wasteful number, since it uses less digits than its factorization.

2850661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259162.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2850661 is about 1688.3900615675. The cubic root of 2850661 is about 141.7909540575.

The spelling of 2850661 in words is "two million, eight hundred fifty thousand, six hundred sixty-one".