2006640464 has 20 divisors (see below), whose sum is σ = 4092491040. Its totient is φ = 950513760.

The previous prime is 2006640421. The next prime is 2006640479. The reversal of 2006640464 is 4640466002.

It is a self number, because there is not a number n which added to its sum of digits gives 2006640464.

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, 3300092 + ... + 3300699.

It is an arithmetic number, because the mean of its divisors is an integer number (204624552).

Almost surely, 2^2006640464 is an apocalyptic number.

It is an amenable number.

2006640464 is an abundant number, since it is smaller than the sum of its proper divisors (2085850576).

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

2006640464 is a wasteful number, since it uses less digits than its factorization.

2006640464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600818 (or 6600812 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 2006640464 is about 44795.5406709195. The cubic root of 2006640464 is about 1261.3139195427.

The spelling of 2006640464 in words is "two billion, six million, six hundred forty thousand, four hundred sixty-four".