6764222640 has 240 divisors, whose sum is σ = 24989338080. Its totient is φ = 1508290560.

The previous prime is 6764222627. The next prime is 6764222659. The reversal of 6764222640 is 462224676.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 475146 + ... + 489174.

It is an arithmetic number, because the mean of its divisors is an integer number (104122242).

Almost surely, 2^6764222640 is an apocalyptic number.

6764222640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6764222640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12494669040).

6764222640 is an abundant number, since it is smaller than the sum of its proper divisors (18225115440).

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

6764222640 is a wasteful number, since it uses less digits than its factorization.

6764222640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14100 (or 14087 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 6764222640 is about 82244.8943096166. The cubic root of 6764222640 is about 1891.2080068789.

The spelling of 6764222640 in words is "six billion, seven hundred sixty-four million, two hundred twenty-two thousand, six hundred forty".