67505423 has 4 divisors (see below), whose sum is σ = 71058360. Its totient is φ = 63952488.

The previous prime is 67505413. The next prime is 67505429. The reversal of 67505423 is 32450576.

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 67505423 - 2⁴ = 67505407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67505423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67505429) 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, 1776440 + ... + 1776477.

It is an arithmetic number, because the mean of its divisors is an integer number (17764590).

Almost surely, 2^67505423 is an apocalyptic number.

67505423 is a deficient number, since it is larger than the sum of its proper divisors (3552937).

67505423 is a wasteful number, since it uses less digits than its factorization.

67505423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552936.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 67505423 is about 8216.1683892189. The cubic root of 67505423 is about 407.1735461133.

Adding to 67505423 its reverse (32450576), we get a palindrome (99955999).

The spelling of 67505423 in words is "sixty-seven million, five hundred five thousand, four hundred twenty-three".