6822266640 has 80 divisors (see below), whose sum is σ = 24170322048. Its totient is φ = 1559374848.

The previous prime is 6822266639. The next prime is 6822266663. The reversal of 6822266640 is 466622286.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 6822266592 and 6822266601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028757 + ... + 2032116.

Almost surely, 2^6822266640 is an apocalyptic number.

6822266640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6822266640 is an abundant number, since it is smaller than the sum of its proper divisors (17348055408).

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

6822266640 is a wasteful number, since it uses less digits than its factorization.

6822266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060896 (or 4060890 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 6822266640 is about 82597.0135053320. The cubic root of 6822266640 is about 1896.6021116392.

The spelling of 6822266640 in words is "six billion, eight hundred twenty-two million, two hundred sixty-six thousand, six hundred forty".