6221372766 has 32 divisors (see below), whose sum is σ = 14400291840. Its totient is φ = 1755033696.

The previous prime is 6221372761. The next prime is 6221372789. The reversal of 6221372766 is 6672731226.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221372761) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 934201 + ... + 940836.

It is an arithmetic number, because the mean of its divisors is an integer number (450009120).

Almost surely, 2^6221372766 is an apocalyptic number.

6221372766 is an abundant number, since it is smaller than the sum of its proper divisors (8178919074).

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

6221372766 is a wasteful number, since it uses less digits than its factorization.

6221372766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875128.

The product of its digits is 254016, while the sum is 42.

The square root of 6221372766 is about 78875.6791793262. The cubic root of 6221372766 is about 1839.1990809696.

The spelling of 6221372766 in words is "six billion, two hundred twenty-one million, three hundred seventy-two thousand, seven hundred sixty-six".