2007640 has 32 divisors (see below), whose sum is σ = 4607280. Its totient is φ = 787072.

The previous prime is 2007631. The next prime is 2007659. The reversal of 2007640 is 467002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647 + ... + 2593.

2^2007640 is an apocalyptic number.

2007640 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 2007640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303640).

2007640 is an abundant number, since it is smaller than the sum of its proper divisors (2599640).

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

2007640 is a wasteful number, since it uses less digits than its factorization.

2007640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2007640 is about 1416.9121355963. The cubic root of 2007640 is about 126.1523310881.

The spelling of 2007640 in words is "two million, seven thousand, six hundred forty".