6822667638 has 32 divisors (see below), whose sum is σ = 15237696000. Its totient is φ = 2262790728.

The previous prime is 6822667637. The next prime is 6822667697. The reversal of 6822667638 is 8367662286.

It is a happy number.

It is a super-2 number, since 2×6822667638² = 93097587397224998088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6822667633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306706 + ... + 328197.

It is an arithmetic number, because the mean of its divisors is an integer number (476178000).

Almost surely, 2^6822667638 is an apocalyptic number.

6822667638 is an abundant number, since it is smaller than the sum of its proper divisors (8415028362).

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

6822667638 is a wasteful number, since it uses less digits than its factorization.

6822667638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635113 (or 635107 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 6822667638 is about 82599.4409060981. The cubic root of 6822667638 is about 1896.6392702940.

The spelling of 6822667638 in words is "six billion, eight hundred twenty-two million, six hundred sixty-seven thousand, six hundred thirty-eight".