2661366 has 8 divisors (see below), whose sum is σ = 5322744. Its totient is φ = 887120.

The previous prime is 2661341. The next prime is 2661371. The reversal of 2661366 is 6631662.

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

2661366 is an admirable number.

It is a super-3 number, since 3×2661366³ = 56550320105033327688, which contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221775 + ... + 221786.

It is an arithmetic number, because the mean of its divisors is an integer number (665343).

2^2661366 is an apocalyptic number.

2661366 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.

2661366 is a wasteful number, since it uses less digits than its factorization.

2661366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443566.

The product of its digits is 7776, while the sum is 30.

The square root of 2661366 is about 1631.3693634490. The cubic root of 2661366 is about 138.5803119985.

The spelling of 2661366 in words is "two million, six hundred sixty-one thousand, three hundred sixty-six".