6466043904 has 80 divisors (see below), whose sum is σ = 17246961600. Its totient is φ = 2154823680.

The previous prime is 6466043893. The next prime is 6466043921. The reversal of 6466043904 is 4093406646.

It is a super-2 number, since 2×6466043904² = 83619447536911122432, which contains 22 as substring.

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, 1570809 + ... + 1574919.

It is an arithmetic number, because the mean of its divisors is an integer number (215587020).

Almost surely, 2^6466043904 is an apocalyptic number.

6466043904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6466043904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8623480800).

6466043904 is an abundant number, since it is smaller than the sum of its proper divisors (10780917696).

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

6466043904 is an frugal number, since it uses more digits than its factorization.

6466043904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152 (or 4116 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 6466043904 is about 80411.7149674101. The cubic root of 6466043904 is about 1863.0001207225. Note that the first 3 decimals are identical.

The spelling of 6466043904 in words is "six billion, four hundred sixty-six million, forty-three thousand, nine hundred four".