2651994 has 32 divisors (see below), whose sum is σ = 5989440. Its totient is φ = 869616.

The previous prime is 2651989. The next prime is 2652007. The reversal of 2651994 is 4991562.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3252 + ... + 3984.

It is an arithmetic number, because the mean of its divisors is an integer number (187170).

2^2651994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994720).

2651994 is an abundant number, since it is smaller than the sum of its proper divisors (3337446).

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

2651994 is a wasteful number, since it uses less digits than its factorization.

2651994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 805 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2651994 is about 1628.4943966744. The cubic root of 2651994 is about 138.4174504932.

The spelling of 2651994 in words is "two million, six hundred fifty-one thousand, nine hundred ninety-four".