67723289 has 4 divisors (see below), whose sum is σ = 67981056. Its totient is φ = 67465524.

The previous prime is 67723261. The next prime is 67723301. The reversal of 67723289 is 98232776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67723289 - 2¹⁶ = 67657753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67723489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128489 + ... + 129014.

It is an arithmetic number, because the mean of its divisors is an integer number (16995264).

Almost surely, 2^67723289 is an apocalyptic number.

It is an amenable number.

67723289 is a deficient number, since it is larger than the sum of its proper divisors (257767).

67723289 is a wasteful number, since it uses less digits than its factorization.

67723289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257766.

The product of its digits is 254016, while the sum is 44.

The square root of 67723289 is about 8229.4160789208. The cubic root of 67723289 is about 407.6111110062.

The spelling of 67723289 in words is "sixty-seven million, seven hundred twenty-three thousand, two hundred eighty-nine".