67045423 has 4 divisors (see below), whose sum is σ = 67264120. Its totient is φ = 66826728.

The previous prime is 67045411. The next prime is 67045439. The reversal of 67045423 is 32454076.

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

It is a cyclic number.

It is not a de Polignac number, because 67045423 - 2²⁵ = 33490991 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 (67045403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108888 + ... + 109501.

It is an arithmetic number, because the mean of its divisors is an integer number (16816030).

Almost surely, 2^67045423 is an apocalyptic number.

67045423 is a deficient number, since it is larger than the sum of its proper divisors (218697).

67045423 is a wasteful number, since it uses less digits than its factorization.

67045423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218696.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 67045423 is about 8188.1269530950. The cubic root of 67045423 is about 406.2465742354.

Adding to 67045423 its reverse (32454076), we get a palindrome (99499499).

The spelling of 67045423 in words is "sixty-seven million, forty-five thousand, four hundred twenty-three".