67385647 has 16 divisors (see below), whose sum is σ = 83865600. Its totient is φ = 52829280.

The previous prime is 67385627. The next prime is 67385707. The reversal of 67385647 is 74658376.

It is not a de Polignac number, because 67385647 - 2²³ = 58997039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67385597 and 67385606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67385627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4879 + ... + 12592.

It is an arithmetic number, because the mean of its divisors is an integer number (5241600).

Almost surely, 2^67385647 is an apocalyptic number.

67385647 is a deficient number, since it is larger than the sum of its proper divisors (16479953).

67385647 is a wasteful number, since it uses less digits than its factorization.

67385647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17526.

The product of its digits is 846720, while the sum is 46.

The square root of 67385647 is about 8208.8761106500. The cubic root of 67385647 is about 406.9325852680.

It can be divided in two parts, 673 and 85647, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 67385647 in words is "sixty-seven million, three hundred eighty-five thousand, six hundred forty-seven".