67545047 has 2 divisors, whose sum is σ = 67545048. Its totient is φ = 67545046.

The previous prime is 67545013. The next prime is 67545053. The reversal of 67545047 is 74054576.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67545047 - 2¹⁸ = 67282903 is a prime.

It is equal to p_3982097 and since 67545047 and 3982097 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67545047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67545007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33772523 + 33772524.

It is an arithmetic number, because the mean of its divisors is an integer number (33772524).

Almost surely, 2^67545047 is an apocalyptic number.

67545047 is a deficient number, since it is larger than the sum of its proper divisors (1).

67545047 is an equidigital number, since it uses as much as digits as its factorization.

67545047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 67545047 is about 8218.5793784571. The cubic root of 67545047 is about 407.2531974370.

The spelling of 67545047 in words is "sixty-seven million, five hundred forty-five thousand, forty-seven".