6622557 has 4 divisors (see below), whose sum is σ = 8830080. Its totient is φ = 4415036.

The previous prime is 6622547. The next prime is 6622601. The reversal of 6622557 is 7552266.

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 6622557 - 2⁴ = 6622541 is a prime.

It is a super-2 number, since 2×6622557² = 87716522436498, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622547) 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, 1103757 + ... + 1103762.

It is an arithmetic number, because the mean of its divisors is an integer number (2207520).

Almost surely, 2^6622557 is an apocalyptic number.

It is an amenable number.

6622557 is a deficient number, since it is larger than the sum of its proper divisors (2207523).

6622557 is a wasteful number, since it uses less digits than its factorization.

6622557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207522.

The product of its digits is 25200, while the sum is 33.

The square root of 6622557 is about 2573.4329212163. The cubic root of 6622557 is about 187.7911990713.

The spelling of 6622557 in words is "six million, six hundred twenty-two thousand, five hundred fifty-seven".