2666916 has 72 divisors (see below), whose sum is σ = 8124480. Its totient is φ = 720576.

The previous prime is 2666891. The next prime is 2666929. The reversal of 2666916 is 6196662.

It is a happy number.

It is a super-2 number, since 2×2666916² = 14224881902112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4510 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

2^2666916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4062240).

2666916 is an abundant number, since it is smaller than the sum of its proper divisors (5457564).

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

2666916 is a wasteful number, since it uses less digits than its factorization.

2666916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 588 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 2666916 is about 1633.0695025013. The cubic root of 2666916 is about 138.6765766874.

The spelling of 2666916 in words is "two million, six hundred sixty-six thousand, nine hundred sixteen".