67689445 has 8 divisors (see below), whose sum is σ = 81653760. Its totient is φ = 53867280.

The previous prime is 67689421. The next prime is 67689467. The reversal of 67689445 is 54498676.

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

It is not a de Polignac number, because 67689445 - 2¹³ = 67681253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34485 + ... + 36394.

It is an arithmetic number, because the mean of its divisors is an integer number (10206720).

Almost surely, 2^67689445 is an apocalyptic number.

It is an amenable number.

67689445 is a deficient number, since it is larger than the sum of its proper divisors (13964315).

67689445 is a wasteful number, since it uses less digits than its factorization.

67689445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71075.

The product of its digits is 1451520, while the sum is 49.

The square root of 67689445 is about 8227.3595399739. The cubic root of 67689445 is about 407.5431999066.

The spelling of 67689445 in words is "sixty-seven million, six hundred eighty-nine thousand, four hundred forty-five".