6671957 has 2 divisors, whose sum is σ = 6671958. Its totient is φ = 6671956.

The previous prime is 6671947. The next prime is 6671963. The reversal of 6671957 is 7591766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5827396 + 844561 = 2414^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 6671957 - 2⁶ = 6671893 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6671947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335978 + 3335979.

It is an arithmetic number, because the mean of its divisors is an integer number (3335979).

Almost surely, 2^6671957 is an apocalyptic number.

It is an amenable number.

6671957 is a deficient number, since it is larger than the sum of its proper divisors (1).

6671957 is an equidigital number, since it uses as much as digits as its factorization.

6671957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 41.

The square root of 6671957 is about 2583.0131629552. The cubic root of 6671957 is about 188.2569765560.

The spelling of 6671957 in words is "six million, six hundred seventy-one thousand, nine hundred fifty-seven".