6506566340 has 48 divisors (see below), whose sum is σ = 14733774720. Its totient is φ = 2405502720.

The previous prime is 6506566333. The next prime is 6506566357. The reversal of 6506566340 is 436656056.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193232 + ... + 224391.

It is an arithmetic number, because the mean of its divisors is an integer number (306953640).

Almost surely, 2^6506566340 is an apocalyptic number.

It is an amenable number.

6506566340 is an abundant number, since it is smaller than the sum of its proper divisors (8227208380).

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

6506566340 is a wasteful number, since it uses less digits than its factorization.

6506566340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417692 (or 417690 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 6506566340 is about 80663.2899155496. The cubic root of 6506566340 is about 1866.8838012012.

The spelling of 6506566340 in words is "six billion, five hundred six million, five hundred sixty-six thousand, three hundred forty".