2642660 has 24 divisors (see below), whose sum is σ = 5583480. Its totient is φ = 1050624.

The previous prime is 2642639. The next prime is 2642693. The reversal of 2642660 is 662462.

It can be written as a sum of positive squares in 4 ways, for example, as 1705636 + 937024 = 1306^2 + 968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4292 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (232645).

2^2642660 is an apocalyptic number.

2642660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2642660 is an abundant number, since it is smaller than the sum of its proper divisors (2940820).

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

2642660 is a wasteful number, since it uses less digits than its factorization.

2642660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2642660 is about 1625.6260332561. The cubic root of 2642660 is about 138.2548675184.

The spelling of 2642660 in words is "two million, six hundred forty-two thousand, six hundred sixty".