6806406280 has 64 divisors (see below), whose sum is σ = 16521297840. Its totient is φ = 2514051072.

The previous prime is 6806406253. The next prime is 6806406293. The reversal of 6806406280 is 826046086.

It can be written as a sum of positive squares in 8 ways, for example, as 4469457316 + 2336948964 = 66854^2 + 48342^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58389 + ... + 130468.

Almost surely, 2^6806406280 is an apocalyptic number.

It is an amenable number.

6806406280 is an abundant number, since it is smaller than the sum of its proper divisors (9714891560).

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

6806406280 is a wasteful number, since it uses less digits than its factorization.

6806406280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188938 (or 188934 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 6806406280 is about 82500.9471460783. The cubic root of 6806406280 is about 1895.1312352403.

The spelling of 6806406280 in words is "six billion, eight hundred six million, four hundred six thousand, two hundred eighty".