6348405906 has 48 divisors (see below), whose sum is σ = 14138280000. Its totient is φ = 2057245344.

The previous prime is 6348405893. The next prime is 6348405907. The reversal of 6348405906 is 6095048436.

6348405906 is a `hidden beast` number, since 634 + 8 + 4 + 0 + 5 + 9 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6348405907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 995155 + ... + 1001513.

It is an arithmetic number, because the mean of its divisors is an integer number (294547500).

Almost surely, 2^6348405906 is an apocalyptic number.

6348405906 is an abundant number, since it is smaller than the sum of its proper divisors (7789874094).

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

6348405906 is a wasteful number, since it uses less digits than its factorization.

6348405906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903 (or 7900 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6348405906 is about 79676.8843893886. The cubic root of 6348405906 is about 1851.6329294182.

The spelling of 6348405906 in words is "six billion, three hundred forty-eight million, four hundred five thousand, nine hundred six".