67423855 has 4 divisors (see below), whose sum is σ = 80908632. Its totient is φ = 53939080.

The previous prime is 67423831. The next prime is 67423859. The reversal of 67423855 is 55832476.

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

It is not a de Polignac number, because 67423855 - 2²³ = 59035247 is a prime.

It is a super-2 number, since 2×67423855² = 9091952446122050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67423859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6742381 + ... + 6742390.

It is an arithmetic number, because the mean of its divisors is an integer number (20227158).

Almost surely, 2^67423855 is an apocalyptic number.

67423855 is a deficient number, since it is larger than the sum of its proper divisors (13484777).

67423855 is a wasteful number, since it uses less digits than its factorization.

67423855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13484776.

The product of its digits is 201600, while the sum is 40.

The square root of 67423855 is about 8211.2030178288. The cubic root of 67423855 is about 407.0094816756.

The spelling of 67423855 in words is "sixty-seven million, four hundred twenty-three thousand, eight hundred fifty-five".