2865915 has 64 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 1330560.

The previous prime is 2865913. The next prime is 2865917. The reversal of 2865915 is 5195682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2865913) and next prime (2865917).

It is not a de Polignac number, because 2865915 - 2¹ = 2865913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2865915.

It is not an unprimeable number, because it can be changed into a prime (2865913) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40330 + ... + 40400.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2865915 is an apocalyptic number.

2865915 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

2865915 is a wasteful number, since it uses less digits than its factorization.

2865915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 115 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 2865915 is about 1692.9013556613. The cubic root of 2865915 is about 142.0434139557.

The spelling of 2865915 in words is "two million, eight hundred sixty-five thousand, nine hundred fifteen".