67391423 has 16 divisors (see below), whose sum is σ = 78278400. Its totient is φ = 57372480.

The previous prime is 67391399. The next prime is 67391459. The reversal of 67391423 is 32419376.

It is not a de Polignac number, because 67391423 - 2¹⁰ = 67390399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67391123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16790 + ... + 20412.

It is an arithmetic number, because the mean of its divisors is an integer number (4892400).

Almost surely, 2^67391423 is an apocalyptic number.

67391423 is a deficient number, since it is larger than the sum of its proper divisors (10886977).

67391423 is a wasteful number, since it uses less digits than its factorization.

67391423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742.

The product of its digits is 27216, while the sum is 35.

The square root of 67391423 is about 8209.2279174110. The cubic root of 67391423 is about 406.9442117570.

The spelling of 67391423 in words is "sixty-seven million, three hundred ninety-one thousand, four hundred twenty-three".