67089749 has 8 divisors (see below), whose sum is σ = 67907808. Its totient is φ = 66275440.

The previous prime is 67089739. The next prime is 67089751. The reversal of 67089749 is 94798076.

It is a happy number.

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 67089749 - 2⁴ = 67089733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67089697 and 67089706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67089739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51899 + ... + 53175.

It is an arithmetic number, because the mean of its divisors is an integer number (8488476).

Almost surely, 2^67089749 is an apocalyptic number.

It is an amenable number.

67089749 is a deficient number, since it is larger than the sum of its proper divisors (818059).

67089749 is a wasteful number, since it uses less digits than its factorization.

67089749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 67089749 is about 8190.8332298979. The cubic root of 67089749 is about 406.3360823027.

The spelling of 67089749 in words is "sixty-seven million, eighty-nine thousand, seven hundred forty-nine".