2643000 has 64 divisors (see below), whose sum is σ = 8255520. Its totient is φ = 704000.

The previous prime is 2642993. The next prime is 2643013. The reversal of 2643000 is 3462.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam 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, 2560 + ... + 3440.

2^2643000 is an apocalyptic number.

2643000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2643000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4127760).

2643000 is an abundant number, since it is smaller than the sum of its proper divisors (5612520).

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

2643000 is a wasteful number, since it uses less digits than its factorization.

2643000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2643000 is about 1625.7306049896. The cubic root of 2643000 is about 138.2607964737.

Adding to 2643000 its reverse (3462), we get a palindrome (2646462).

The spelling of 2643000 in words is "two million, six hundred forty-three thousand".