2506770664 has 16 divisors (see below), whose sum is σ = 4743317700. Its totient is φ = 1241885952.

The previous prime is 2506770653. The next prime is 2506770689. The reversal of 2506770664 is 4660776052.

It can be written as a sum of positive squares in 2 ways, for example, as 2205053764 + 301716900 = 46958^2 + 17370^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2506770664.

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, 1436497 + ... + 1438240.

Almost surely, 2^2506770664 is an apocalyptic number.

It is an amenable number.

2506770664 is a deficient number, since it is larger than the sum of its proper divisors (2236547036).

2506770664 is a wasteful number, since it uses less digits than its factorization.

2506770664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874852 (or 2874848 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 2506770664 is about 50067.6608600801. The cubic root of 2506770664 is about 1358.4329311875.

The spelling of 2506770664 in words is "two billion, five hundred six million, seven hundred seventy thousand, six hundred sixty-four".