6222990 has 16 divisors (see below), whose sum is σ = 14935248. Its totient is φ = 1659456.

The previous prime is 6222977. The next prime is 6222991. The reversal of 6222990 is 992226.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 207433 = 6222990 / (6 + 2 + 2 + 2 + 9 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103687 + ... + 103746.

It is an arithmetic number, because the mean of its divisors is an integer number (933453).

Almost surely, 2^6222990 is an apocalyptic number.

6222990 is an abundant number, since it is smaller than the sum of its proper divisors (8712258).

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

6222990 is a wasteful number, since it uses less digits than its factorization.

6222990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207443.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6222990 is about 2494.5921510339. The cubic root of 6222990 is about 183.9358432595.

The spelling of 6222990 in words is "six million, two hundred twenty-two thousand, nine hundred ninety".