2604660 has 24 divisors (see below), whose sum is σ = 7293216. Its totient is φ = 694560.

The previous prime is 2604647. The next prime is 2604661. The reversal of 2604660 is 664062.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2604660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21646 + ... + 21765.

It is an arithmetic number, because the mean of its divisors is an integer number (303884).

2^2604660 is an apocalyptic number.

2604660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2604660 is an abundant number, since it is smaller than the sum of its proper divisors (4688556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2604660 is a wasteful number, since it uses less digits than its factorization.

2604660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43423 (or 43421 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2604660 is about 1613.8959074240. The cubic root of 2604660 is about 137.5889892262.

It can be divided in two parts, 26046 and 60, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 2604660 in words is "two million, six hundred four thousand, six hundred sixty".