6678157 has 2 divisors, whose sum is σ = 6678158. Its totient is φ = 6678156.

The previous prime is 6678143. The next prime is 6678173. The reversal of 6678157 is 7518766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4990756 + 1687401 = 2234^2 + 1299^2 .

It is a cyclic number.

It is not a de Polignac number, because 6678157 - 2¹⁵ = 6645389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6678197) 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, 3339078 + 3339079.

It is an arithmetic number, because the mean of its divisors is an integer number (3339079).

Almost surely, 2^6678157 is an apocalyptic number.

It is an amenable number.

6678157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6678157 is an equidigital number, since it uses as much as digits as its factorization.

6678157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 6678157 is about 2584.2130330141. The cubic root of 6678157 is about 188.3152718907.

The spelling of 6678157 in words is "six million, six hundred seventy-eight thousand, one hundred fifty-seven".