6686157503 has 2 divisors, whose sum is σ = 6686157504. Its totient is φ = 6686157502.

The previous prime is 6686157493. The next prime is 6686157509. The reversal of 6686157503 is 3057516866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6686157503 - 2¹⁰ = 6686156479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6686157509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3343078751 + 3343078752.

It is an arithmetic number, because the mean of its divisors is an integer number (3343078752).

Almost surely, 2^6686157503 is an apocalyptic number.

6686157503 is a deficient number, since it is larger than the sum of its proper divisors (1).

6686157503 is an equidigital number, since it uses as much as digits as its factorization.

6686157503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 6686157503 is about 81768.9274908262. The cubic root of 6686157503 is about 1883.9044311183.

The spelling of 6686157503 in words is "six billion, six hundred eighty-six million, one hundred fifty-seven thousand, five hundred three".