67538047 has 2 divisors, whose sum is σ = 67538048. Its totient is φ = 67538046.

The previous prime is 67538039. The next prime is 67538087. The reversal of 67538047 is 74083576.

It is an a-pointer prime, because the next prime (67538087) can be obtained adding 67538047 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67538047 - 2³ = 67538039 is a prime.

It is a super-2 number, since 2×67538047² = 9122775585148418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67538087) 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, 33769023 + 33769024.

It is an arithmetic number, because the mean of its divisors is an integer number (33769024).

Almost surely, 2^67538047 is an apocalyptic number.

67538047 is a deficient number, since it is larger than the sum of its proper divisors (1).

67538047 is an equidigital number, since it uses as much as digits as its factorization.

67538047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 67538047 is about 8218.1535030687. The cubic root of 67538047 is about 407.2391284515.

The spelling of 67538047 in words is "sixty-seven million, five hundred thirty-eight thousand, forty-seven".