2667921 has 8 divisors (see below), whose sum is σ = 3617760. Its totient is φ = 1748352.

The previous prime is 2667919. The next prime is 2667937. The reversal of 2667921 is 1297662.

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

It is not a de Polignac number, because 2667921 - 2¹ = 2667919 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2667941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7360 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (452220).

2^2667921 is an apocalyptic number.

It is an amenable number.

2667921 is a deficient number, since it is larger than the sum of its proper divisors (949839).

2667921 is a wasteful number, since it uses less digits than its factorization.

2667921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15135.

The product of its digits is 9072, while the sum is 33.

The square root of 2667921 is about 1633.3771762823. The cubic root of 2667921 is about 138.6939941159.

The spelling of 2667921 in words is "two million, six hundred sixty-seven thousand, nine hundred twenty-one".