6404160676 has 9 divisors (see below), whose sum is σ = 11207561281. Its totient is φ = 3202000312.

The previous prime is 6404160671. The next prime is 6404160677. The reversal of 6404160676 is 6760614046.

It is a happy number.

The square root of 6404160676 is 80026.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2753100900 + 3651059776 = 52470^2 + 60424^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404160671) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 140046 + ... + 180058.

Almost surely, 2^6404160676 is an apocalyptic number.

6404160676 is the 80026-th square number.

It is an amenable number.

6404160676 is a deficient number, since it is larger than the sum of its proper divisors (4803400605).

6404160676 is an frugal number, since it uses more digits than its factorization.

6404160676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80030 (or 40015 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The cubic root of 6404160676 is about 1857.0377826908.

The spelling of 6404160676 in words is "six billion, four hundred four million, one hundred sixty thousand, six hundred seventy-six".