4915865 has 4 divisors (see below), whose sum is σ = 5899044. Its totient is φ = 3932688.

The previous prime is 4915853. The next prime is 4915879. The reversal of 4915865 is 5685194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5685194 = 2 ⋅2842597.

It can be written as a sum of positive squares in 2 ways, for example, as 1485961 + 3429904 = 1219^2 + 1852^2 .

It is a cyclic number.

It is not a de Polignac number, because 4915865 - 2⁸ = 4915609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491582 + ... + 491591.

It is an arithmetic number, because the mean of its divisors is an integer number (1474761).

Almost surely, 2^4915865 is an apocalyptic number.

It is an amenable number.

4915865 is a deficient number, since it is larger than the sum of its proper divisors (983179).

4915865 is an equidigital number, since it uses as much as digits as its factorization.

4915865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983178.

The product of its digits is 43200, while the sum is 38.

The square root of 4915865 is about 2217.1750043693. The cubic root of 4915865 is about 170.0330385614.

The spelling of 4915865 in words is "four million, nine hundred fifteen thousand, eight hundred sixty-five".