2663994 has 8 divisors (see below), whose sum is σ = 5328000. Its totient is φ = 887996.

The previous prime is 2663993. The next prime is 2664001. The reversal of 2663994 is 4993662.

It is a happy number.

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

2663994 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2663993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221994 + ... + 222005.

It is an arithmetic number, because the mean of its divisors is an integer number (666000).

2^2663994 is an apocalyptic number.

2663994 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.

2663994 is a wasteful number, since it uses less digits than its factorization.

2663994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444004.

The product of its digits is 69984, while the sum is 39.

The square root of 2663994 is about 1632.1746230107. The cubic root of 2663994 is about 138.6259112949.

The spelling of 2663994 in words is "two million, six hundred sixty-three thousand, nine hundred ninety-four".