2861617 has 16 divisors (see below), whose sum is σ = 3283200. Its totient is φ = 2471040.

The previous prime is 2861603. The next prime is 2861623. The reversal of 2861617 is 7161682.

2861617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2861617 is a prime.

It is a Duffinian number.

2861617 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2861657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32109 + ... + 32197.

It is an arithmetic number, because the mean of its divisors is an integer number (205200).

2^2861617 is an apocalyptic number.

It is an amenable number.

2861617 is a deficient number, since it is larger than the sum of its proper divisors (421583).

2861617 is a wasteful number, since it uses less digits than its factorization.

2861617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216.

The product of its digits is 4032, while the sum is 31.

The square root of 2861617 is about 1691.6314610458. The cubic root of 2861617 is about 141.9723711372.

The spelling of 2861617 in words is "two million, eight hundred sixty-one thousand, six hundred seventeen".