6400008166 has 4 divisors (see below), whose sum is σ = 9600012252. Its totient is φ = 3200004082.

The previous prime is 6400008161. The next prime is 6400008193. The reversal of 6400008166 is 6618000046.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400008161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600002040 + ... + 1600002043.

It is an arithmetic number, because the mean of its divisors is an integer number (2400003063).

Almost surely, 2^6400008166 is an apocalyptic number.

6400008166 is a deficient number, since it is larger than the sum of its proper divisors (3200004086).

6400008166 is a wasteful number, since it uses less digits than its factorization.

6400008166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200004085.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 6400008166 is about 80000.0510374837. The cubic root of 6400008166 is about 1856.6363230951.

The spelling of 6400008166 in words is "six billion, four hundred million, eight thousand, one hundred sixty-six".