7006640 has 20 divisors (see below), whose sum is σ = 16290624. Its totient is φ = 2802624.

The previous prime is 7006639. The next prime is 7006667. The reversal of 7006640 is 466007.

It is a tau number, because it is divible by the number of its divisors (20).

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, 43712 + ... + 43871.

Almost surely, 2^7006640 is an apocalyptic number.

It is an amenable number.

7006640 is an abundant number, since it is smaller than the sum of its proper divisors (9283984).

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

7006640 is a wasteful number, since it uses less digits than its factorization.

7006640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87596 (or 87590 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 7006640 is about 2647.0058556792. The cubic root of 7006640 is about 191.3535842247.

The spelling of 7006640 in words is "seven million, six thousand, six hundred forty".