6478406792 has 108 divisors (see below), whose sum is σ = 14530748085. Its totient is φ = 2704553280.

The previous prime is 6478406791. The next prime is 6478406873. The reversal of 6478406792 is 2976048746.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 5539229476 + 939177316 = 74426^2 + 30646^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=56914.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6478406791) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 32554709 + ... + 32554907.

Almost surely, 2^6478406792 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 6478406792

6478406792 is an abundant number, since it is smaller than the sum of its proper divisors (8052341293).

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

6478406792 is a wasteful number, since it uses less digits than its factorization.

6478406792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The square root of 6478406792 is about 80488.5506889023. The cubic root of 6478406792 is about 1864.1866988360.

The spelling of 6478406792 in words is "six billion, four hundred seventy-eight million, four hundred six thousand, seven hundred ninety-two".