2564001606 has 8 divisors (see below), whose sum is σ = 5128003224. Its totient is φ = 854667200.

The previous prime is 2564001589. The next prime is 2564001631. The reversal of 2564001606 is 6061004652.

2564001606 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2564001606 is an admirable number.

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, 213666795 + ... + 213666806.

It is an arithmetic number, because the mean of its divisors is an integer number (641000403).

Almost surely, 2^2564001606 is an apocalyptic number.

2564001606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2564001606 is a wasteful number, since it uses less digits than its factorization.

2564001606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427333606.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2564001606 is about 50635.9714629827. The cubic root of 2564001606 is about 1368.6931623195.

The spelling of 2564001606 in words is "two billion, five hundred sixty-four million, one thousand, six hundred six".