2661306 has 8 divisors (see below), whose sum is σ = 5322624. Its totient is φ = 887100.

The previous prime is 2661283. The next prime is 2661317. The reversal of 2661306 is 6031662.

It is a sphenic number, since it is the product of 3 distinct primes.

2661306 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221770 + ... + 221781.

It is an arithmetic number, because the mean of its divisors is an integer number (665328).

2^2661306 is an apocalyptic number.

2661306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2661306 is a wasteful number, since it uses less digits than its factorization.

2661306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443556.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2661306 is about 1631.3509738864. The cubic root of 2661306 is about 138.5792705682.

Adding to 2661306 its reverse (6031662), we get a palindrome (8692968).

The spelling of 2661306 in words is "two million, six hundred sixty-one thousand, three hundred six".