6488490906 has 40 divisors (see below), whose sum is σ = 14848384320. Its totient is φ = 2116810152.

The previous prime is 6488490893. The next prime is 6488490907. The reversal of 6488490906 is 6090948846.

6488490906 is a `hidden beast` number, since 64 + 8 + 8 + 490 + 90 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6488490907) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 418476 + ... + 433703.

It is an arithmetic number, because the mean of its divisors is an integer number (371209608).

Almost surely, 2^6488490906 is an apocalyptic number.

6488490906 is an abundant number, since it is smaller than the sum of its proper divisors (8359893414).

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

6488490906 is a wasteful number, since it uses less digits than its factorization.

6488490906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852240 (or 852231 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 6488490906 is about 80551.1694887169. The cubic root of 6488490906 is about 1865.1534450531.

The spelling of 6488490906 in words is "six billion, four hundred eighty-eight million, four hundred ninety thousand, nine hundred six".