67648789 has 8 divisors (see below), whose sum is σ = 75203072. Its totient is φ = 60430320.

The previous prime is 67648771. The next prime is 67648837. The reversal of 67648789 is 98784676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67648789 - 2¹⁹ = 67124501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67648739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83529 + ... + 84334.

It is an arithmetic number, because the mean of its divisors is an integer number (9400384).

Almost surely, 2^67648789 is an apocalyptic number.

It is an amenable number.

67648789 is a deficient number, since it is larger than the sum of its proper divisors (7554283).

67648789 is a wasteful number, since it uses less digits than its factorization.

67648789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167907.

The product of its digits is 4064256, while the sum is 55.

The square root of 67648789 is about 8224.8883883005. Note that the first 3 decimals coincide. The cubic root of 67648789 is about 407.4615899662.

The spelling of 67648789 in words is "sixty-seven million, six hundred forty-eight thousand, seven hundred eighty-nine".