6672557 has 2 divisors, whose sum is σ = 6672558. Its totient is φ = 6672556.

The previous prime is 6672529. The next prime is 6672559. The reversal of 6672557 is 7552766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6651241 + 21316 = 2579^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 6672557 - 2⁶ = 6672493 is a prime.

Together with 6672559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6672557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6672559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3336278 + 3336279.

It is an arithmetic number, because the mean of its divisors is an integer number (3336279).

Almost surely, 2^6672557 is an apocalyptic number.

It is an amenable number.

6672557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6672557 is an equidigital number, since it uses as much as digits as its factorization.

6672557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 38.

The square root of 6672557 is about 2583.1293037709. The cubic root of 6672557 is about 188.2626196180.

The spelling of 6672557 in words is "six million, six hundred seventy-two thousand, five hundred fifty-seven".