67448643 has 4 divisors (see below), whose sum is σ = 89931528. Its totient is φ = 44965760.

The previous prime is 67448621. The next prime is 67448657. The reversal of 67448643 is 34684476.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67448643 - 2⁵ = 67448611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67448595 and 67448604.

It is not an unprimeable number, because it can be changed into a prime (67440643) 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 3 ways as a sum of consecutive naturals, for example, 11241438 + ... + 11241443.

It is an arithmetic number, because the mean of its divisors is an integer number (22482882).

Almost surely, 2^67448643 is an apocalyptic number.

67448643 is a deficient number, since it is larger than the sum of its proper divisors (22482885).

67448643 is a wasteful number, since it uses less digits than its factorization.

67448643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22482884.

The product of its digits is 387072, while the sum is 42.

The square root of 67448643 is about 8212.7122803615. The cubic root of 67448643 is about 407.0593538111.

The spelling of 67448643 in words is "sixty-seven million, four hundred forty-eight thousand, six hundred forty-three".