6222403781 has 4 divisors (see below), whose sum is σ = 6788076864. Its totient is φ = 5656730700.

The previous prime is 6222403729. The next prime is 6222403787. The reversal of 6222403781 is 1873042226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6222403781 - 2¹⁰ = 6222402757 is a prime.

It is a super-2 number, since 2×6222403781² = 77436617627606191922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222403787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282836525 + ... + 282836546.

It is an arithmetic number, because the mean of its divisors is an integer number (1697019216).

Almost surely, 2^6222403781 is an apocalyptic number.

It is an amenable number.

6222403781 is a deficient number, since it is larger than the sum of its proper divisors (565673083).

6222403781 is a wasteful number, since it uses less digits than its factorization.

6222403781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565673082.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 6222403781 is about 78882.2146050680. The cubic root of 6222403781 is about 1839.3006736123.

The spelling of 6222403781 in words is "six billion, two hundred twenty-two million, four hundred three thousand, seven hundred eighty-one".