67840793 has 4 divisors (see below), whose sum is σ = 68441268. Its totient is φ = 67240320.

The previous prime is 67840769. The next prime is 67840807. The reversal of 67840793 is 39704876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3888784 + 63952009 = 1972^2 + 7997^2 .

It is a cyclic number.

It is not a de Polignac number, because 67840793 - 2¹⁰ = 67839769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67840093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300068 + ... + 300293.

It is an arithmetic number, because the mean of its divisors is an integer number (17110317).

Almost surely, 2^67840793 is an apocalyptic number.

It is an amenable number.

67840793 is a deficient number, since it is larger than the sum of its proper divisors (600475).

67840793 is a wasteful number, since it uses less digits than its factorization.

67840793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600474.

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

The square root of 67840793 is about 8236.5522520045. The cubic root of 67840793 is about 407.8467180998.

Multiplying 67840793 by its sum of digits (44), we get a palindrome (2984994892).

The spelling of 67840793 in words is "sixty-seven million, eight hundred forty thousand, seven hundred ninety-three".