2606564402 has 18 divisors (see below), whose sum is σ = 4235264343. Its totient is φ = 1202596512.

The previous prime is 2606564369. The next prime is 2606564431. The reversal of 2606564402 is 2044656062.

It can be written as a sum of positive squares in 5 ways, for example, as 564001 + 2606000401 = 751^2 + 51049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36101.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 937238 + ... + 940014.

Almost surely, 2^2606564402 is an apocalyptic number.

2606564402 is a deficient number, since it is larger than the sum of its proper divisors (1628699941).

2606564402 is an frugal number, since it uses more digits than its factorization.

2606564402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5582 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2606564402 is about 51054.5238152311. The cubic root of 2606564402 is about 1376.2251387206.

The spelling of 2606564402 in words is "two billion, six hundred six million, five hundred sixty-four thousand, four hundred two".