2640632 has 16 divisors (see below), whose sum is σ = 5022000. Its totient is φ = 1301440.

The previous prime is 2640581. The next prime is 2640643. The reversal of 2640632 is 2360462.

It is a junction number, because it is equal to n+sod(n) for n = 2640598 and 2640607.

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, 1757 + ... + 2892.

It is an arithmetic number, because the mean of its divisors is an integer number (313875).

2^2640632 is an apocalyptic number.

It is an amenable number.

2640632 is a deficient number, since it is larger than the sum of its proper divisors (2381368).

2640632 is a wasteful number, since it uses less digits than its factorization.

2640632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726 (or 4722 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2640632 is about 1625.0021538447. The cubic root of 2640632 is about 138.2194924765.

The spelling of 2640632 in words is "two million, six hundred forty thousand, six hundred thirty-two".