2601666 has 16 divisors (see below), whose sum is σ = 5781600. Its totient is φ = 867204.

The previous prime is 2601661. The next prime is 2601671. The reversal of 2601666 is 6661062.

2601666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2601661) and next prime (2601671).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2601661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24036 + ... + 24143.

It is an arithmetic number, because the mean of its divisors is an integer number (361350).

2^2601666 is an apocalyptic number.

2601666 is an abundant number, since it is smaller than the sum of its proper divisors (3179934).

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

2601666 is a wasteful number, since it uses less digits than its factorization.

2601666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48190 (or 48184 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2601666 is about 1612.9680715997. The cubic root of 2601666 is about 137.5362504972.

The spelling of 2601666 in words is "two million, six hundred one thousand, six hundred sixty-six".