6411764720 has 40 divisors (see below), whose sum is σ = 15388241280. Its totient is φ = 2481972480.

The previous prime is 6411764707. The next prime is 6411764731. The reversal of 6411764720 is 274671146.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×6411764720² = 82221453649273356800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290215 + ... + 1295174.

It is an arithmetic number, because the mean of its divisors is an integer number (384706032).

Almost surely, 2^6411764720 is an apocalyptic number.

It is an amenable number.

6411764720 is an abundant number, since it is smaller than the sum of its proper divisors (8976476560).

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

6411764720 is a wasteful number, since it uses less digits than its factorization.

6411764720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585433 (or 2585427 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 6411764720 is about 80073.4957398514. The cubic root of 6411764720 is about 1857.7724827556.

The spelling of 6411764720 in words is "six billion, four hundred eleven million, seven hundred sixty-four thousand, seven hundred twenty".