2602605 has 32 divisors (see below), whose sum is σ = 4469760. Its totient is φ = 1290240.

The previous prime is 2602603. The next prime is 2602637. The reversal of 2602605 is 5062062.

It is not a de Polignac number, because 2602605 - 2¹ = 2602603 is a prime.

It is an Ulam number.

2602605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2602603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13389 + ... + 13581.

It is an arithmetic number, because the mean of its divisors is an integer number (139680).

2^2602605 is an apocalyptic number.

It is an amenable number.

2602605 is a deficient number, since it is larger than the sum of its proper divisors (1867155).

2602605 is a wasteful number, since it uses less digits than its factorization.

2602605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2602605 is about 1613.2591236376. The cubic root of 2602605 is about 137.5527951529.

Adding to 2602605 its reverse (5062062), we get a palindrome (7664667).

The spelling of 2602605 in words is "two million, six hundred two thousand, six hundred five".