67393641 has 8 divisors (see below), whose sum is σ = 102695104. Its totient is φ = 38510640.

The previous prime is 67393639. The next prime is 67393649. The reversal of 67393641 is 14639376.

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

It is not a de Polignac number, because 67393641 - 2¹ = 67393639 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67393641.

It is not an unprimeable number, because it can be changed into a prime (67393649) 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, 1604590 + ... + 1604631.

It is an arithmetic number, because the mean of its divisors is an integer number (12836888).

Almost surely, 2^67393641 is an apocalyptic number.

It is an amenable number.

67393641 is a deficient number, since it is larger than the sum of its proper divisors (35301463).

67393641 is a wasteful number, since it uses less digits than its factorization.

67393641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209231.

The product of its digits is 81648, while the sum is 39.

The square root of 67393641 is about 8209.3630081755. The cubic root of 67393641 is about 406.9486761845.

The spelling of 67393641 in words is "sixty-seven million, three hundred ninety-three thousand, six hundred forty-one".