6541570806 has 16 divisors (see below), whose sum is σ = 13651974144. Its totient is φ = 2085718184.

The previous prime is 6541570801. The next prime is 6541570813. The reversal of 6541570806 is 6080751456.

It is a super-2 number, since 2×6541570806² = 85584297219822979272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541570801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23701206 + ... + 23701481.

It is an arithmetic number, because the mean of its divisors is an integer number (853248384).

Almost surely, 2^6541570806 is an apocalyptic number.

6541570806 is an abundant number, since it is smaller than the sum of its proper divisors (7110403338).

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

6541570806 is a wasteful number, since it uses less digits than its factorization.

6541570806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47402715.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 6541570806 is about 80879.9777818961. The cubic root of 6541570806 is about 1870.2256780070.

The spelling of 6541570806 in words is "six billion, five hundred forty-one million, five hundred seventy thousand, eight hundred six".