6866494540 has 24 divisors (see below), whose sum is σ = 14441952672. Its totient is φ = 2742347520.

The previous prime is 6866494519. The next prime is 6866494549. The reversal of 6866494540 is 454946686.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6866494549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252381 + ... + 278260.

It is an arithmetic number, because the mean of its divisors is an integer number (601748028).

Almost surely, 2^6866494540 is an apocalyptic number.

It is an amenable number.

6866494540 is an abundant number, since it is smaller than the sum of its proper divisors (7575458132).

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

6866494540 is a wasteful number, since it uses less digits than its factorization.

6866494540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531297 (or 531295 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The square root of 6866494540 is about 82864.3140320367. The cubic root of 6866494540 is about 1900.6917647276.

The spelling of 6866494540 in words is "six billion, eight hundred sixty-six million, four hundred ninety-four thousand, five hundred forty".