2861567 has 4 divisors (see below), whose sum is σ = 2867760. Its totient is φ = 2855376.

The previous prime is 2861561. The next prime is 2861569. The reversal of 2861567 is 7651682.

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 2861567 - 2¹² = 2857471 is a prime.

It is a d-powerful number, because it can be written as 2²⁰ + 8² + 6² + 1 + 5⁶ + 6⁸ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861561) 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, 2342 + ... + 3347.

It is an arithmetic number, because the mean of its divisors is an integer number (716940).

2^2861567 is an apocalyptic number.

2861567 is a deficient number, since it is larger than the sum of its proper divisors (6193).

2861567 is an equidigital number, since it uses as much as digits as its factorization.

2861567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192.

The product of its digits is 20160, while the sum is 35.

The square root of 2861567 is about 1691.6166823486. The cubic root of 2861567 is about 141.9715442551.

It can be divided in two parts, 28615 and 67, that added together give a palindrome (28682).

The spelling of 2861567 in words is "two million, eight hundred sixty-one thousand, five hundred sixty-seven".