6406548316 has 72 divisors (see below), whose sum is σ = 13390178256. Its totient is φ = 2672651520.

The previous prime is 6406548299. The next prime is 6406548341. The reversal of 6406548316 is 6138456046.

It is a happy number.

It is a super-2 number, since 2×6406548316² = 82087722650484871712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6323826 + ... + 6324838.

It is an arithmetic number, because the mean of its divisors is an integer number (185974698).

Almost surely, 2^6406548316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6406548316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6695089128).

6406548316 is an abundant number, since it is smaller than the sum of its proper divisors (6983629940).

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

6406548316 is a wasteful number, since it uses less digits than its factorization.

6406548316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 6406548316 is about 80040.9165114943. The cubic root of 6406548316 is about 1857.2685382366.

The spelling of 6406548316 in words is "six billion, four hundred six million, five hundred forty-eight thousand, three hundred sixteen".