2609887 has 10 divisors (see below), whose sum is σ = 3047488. Its totient is φ = 2234988.

The previous prime is 2609813. The next prime is 2609899. The reversal of 2609887 is 7889062.

It is not a de Polignac number, because 2609887 - 2¹⁹ = 2085599 is a prime.

It is a super-3 number, since 3×2609887³ = 53331815394239481309, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609287) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1858 + ... + 2944.

2^2609887 is an apocalyptic number.

2609887 is a deficient number, since it is larger than the sum of its proper divisors (437601).

2609887 is an frugal number, since it uses more digits than its factorization.

2609887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2609887 is about 1615.5144691398. The cubic root of 2609887 is about 137.6809650315.

It can be divided in two parts, 260988 and 7, that multiplied together give a triangular number (1826916 = T₁₉₁₁).

The spelling of 2609887 in words is "two million, six hundred nine thousand, eight hundred eighty-seven".