2643572 has 6 divisors (see below), whose sum is σ = 4626258. Its totient is φ = 1321784.

The previous prime is 2643569. The next prime is 2643581. The reversal of 2643572 is 2753462.

It can be written as a sum of positive squares in only one way, i.e., 2572816 + 70756 = 1604^2 + 266^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330443 + ... + 330450.

It is an arithmetic number, because the mean of its divisors is an integer number (771043).

2^2643572 is an apocalyptic number.

It is an amenable number.

2643572 is a deficient number, since it is larger than the sum of its proper divisors (1982686).

2643572 is a wasteful number, since it uses less digits than its factorization.

2643572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660897 (or 660895 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 2643572 is about 1625.9065163779. The cubic root of 2643572 is about 138.2707699219.

The spelling of 2643572 in words is "two million, six hundred forty-three thousand, five hundred seventy-two".