6622657 has 4 divisors (see below), whose sum is σ = 6654256. Its totient is φ = 6591060.

The previous prime is 6622631. The next prime is 6622661. The reversal of 6622657 is 7562266.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-6622657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6622157) 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, 15483 + ... + 15904.

It is an arithmetic number, because the mean of its divisors is an integer number (1663564).

Almost surely, 2^6622657 is an apocalyptic number.

It is an amenable number.

6622657 is a deficient number, since it is larger than the sum of its proper divisors (31599).

6622657 is a wasteful number, since it uses less digits than its factorization.

6622657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31598.

The product of its digits is 30240, while the sum is 34.

The square root of 6622657 is about 2573.4523504429. The cubic root of 6622657 is about 187.7921442765.

The spelling of 6622657 in words is "six million, six hundred twenty-two thousand, six hundred fifty-seven".