67131563 has 2 divisors, whose sum is σ = 67131564. Its totient is φ = 67131562.

The previous prime is 67131553. The next prime is 67131587. The reversal of 67131563 is 36513176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67131563 - 2¹⁴ = 67115179 is a prime.

It is equal to p_3959042 and since 67131563 and 3959042 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67131553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33565781 + 33565782.

It is an arithmetic number, because the mean of its divisors is an integer number (33565782).

Almost surely, 2^67131563 is an apocalyptic number.

67131563 is a deficient number, since it is larger than the sum of its proper divisors (1).

67131563 is an equidigital number, since it uses as much as digits as its factorization.

67131563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 67131563 is about 8193.3853198785. The cubic root of 67131563 is about 406.4204817259.

The spelling of 67131563 in words is "sixty-seven million, one hundred thirty-one thousand, five hundred sixty-three".