2015605 has 16 divisors (see below), whose sum is σ = 2674944. Its totient is φ = 1450240.

The previous prime is 2015599. The next prime is 2015609. The reversal of 2015605 is 5065102.

It is a happy number.

It is not a de Polignac number, because 2015605 - 2¹⁵ = 1982837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1440 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (167184).

2^2015605 is an apocalyptic number.

It is an amenable number.

2015605 is a deficient number, since it is larger than the sum of its proper divisors (659339).

2015605 is a wasteful number, since it uses less digits than its factorization.

2015605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2015605 is about 1419.7200428253. The cubic root of 2015605 is about 126.3189408784.

It can be divided in two parts, 20 and 15605, that added together give a 6-th power (15625 = 5⁶).

The spelling of 2015605 in words is "two million, fifteen thousand, six hundred five".