6622538 has 8 divisors (see below), whose sum is σ = 10697988. Its totient is φ = 3056544.

The previous prime is 6622531. The next prime is 6622541. The reversal of 6622538 is 8352266.

It can be written as a sum of positive squares in 2 ways, for example, as 6620329 + 2209 = 2573^2 + 47^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6622538² = 87716019122888, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁵ + 6⁸ + 2¹⁴ + 2¹⁷ + 5⁴ + 3¹⁴ + 8⁴ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6622531) 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, 127331 + ... + 127382.

Almost surely, 2^6622538 is an apocalyptic number.

6622538 is a deficient number, since it is larger than the sum of its proper divisors (4075450).

6622538 is a wasteful number, since it uses less digits than its factorization.

6622538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254728.

The product of its digits is 17280, while the sum is 32.

The square root of 6622538 is about 2573.4292296467. The cubic root of 6622538 is about 187.7910194812.

The spelling of 6622538 in words is "six million, six hundred twenty-two thousand, five hundred thirty-eight".