6447161662 has 16 divisors (see below), whose sum is σ = 10252972800. Its totient is φ = 3031945560.

The previous prime is 6447161573. The next prime is 6447161663. The reversal of 6447161662 is 2661617446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447161663) 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, 605014 + ... + 615577.

It is an arithmetic number, because the mean of its divisors is an integer number (640810800).

Almost surely, 2^6447161662 is an apocalyptic number.

6447161662 is a deficient number, since it is larger than the sum of its proper divisors (3805811138).

6447161662 is a wasteful number, since it uses less digits than its factorization.

6447161662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220751.

The product of its digits is 290304, while the sum is 43.

The square root of 6447161662 is about 80294.2193560657. The cubic root of 6447161662 is about 1861.1848986493.

The spelling of 6447161662 in words is "six billion, four hundred forty-seven million, one hundred sixty-one thousand, six hundred sixty-two".