2643956 has 12 divisors (see below), whose sum is σ = 5287968. Its totient is φ = 1133112.

The previous prime is 2643947. The next prime is 2643961. The reversal of 2643956 is 6593462.

2643956 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

2643956 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

2643956 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47186 + ... + 47241.

It is an arithmetic number, because the mean of its divisors is an integer number (440664).

2^2643956 is an apocalyptic number.

It is an amenable number.

2643956 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.

2643956 is a wasteful number, since it uses less digits than its factorization.

2643956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94438 (or 94436 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 2643956 is about 1626.0246000599. The cubic root of 2643956 is about 138.2774645766.

The spelling of 2643956 in words is "two million, six hundred forty-three thousand, nine hundred fifty-six".