2656006605 has 80 divisors (see below), whose sum is σ = 5452596864. Its totient is φ = 1211656320.

The previous prime is 2656006603. The next prime is 2656006657. The reversal of 2656006605 is 5066006562.

It is not a de Polignac number, because 2656006605 - 2¹ = 2656006603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2656006605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656006603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2502775 + ... + 2503835.

Almost surely, 2^2656006605 is an apocalyptic number.

It is an amenable number.

2656006605 is an abundant number, since it is smaller than the sum of its proper divisors (2796590259).

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

2656006605 is a wasteful number, since it uses less digits than its factorization.

2656006605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 2656006605 is about 51536.4589877884. The cubic root of 2656006605 is about 1384.8722625006.

The spelling of 2656006605 in words is "two billion, six hundred fifty-six million, six thousand, six hundred five".