6657451 has 2 divisors, whose sum is σ = 6657452. Its totient is φ = 6657450.

The previous prime is 6657449. The next prime is 6657461. The reversal of 6657451 is 1547566.

It is a happy number.

6657451 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6657451 - 2¹ = 6657449 is a prime.

Together with 6657449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6657461) 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, 3328725 + 3328726.

It is an arithmetic number, because the mean of its divisors is an integer number (3328726).

Almost surely, 2^6657451 is an apocalyptic number.

6657451 is a deficient number, since it is larger than the sum of its proper divisors (1).

6657451 is an equidigital number, since it uses as much as digits as its factorization.

6657451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 6657451 is about 2580.2036741312. The cubic root of 6657451 is about 188.1204430415.

The spelling of 6657451 in words is "six million, six hundred fifty-seven thousand, four hundred fifty-one".