67240255 has 4 divisors (see below), whose sum is σ = 80688312. Its totient is φ = 53792200.

The previous prime is 67240223. The next prime is 67240279. The reversal of 67240255 is 55204276.

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

It is not a de Polignac number, because 67240255 - 2⁵ = 67240223 is a prime.

It is a Smith number, since the sum of its digits (31) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6724021 + ... + 6724030.

It is an arithmetic number, because the mean of its divisors is an integer number (20172078).

Almost surely, 2^67240255 is an apocalyptic number.

67240255 is a deficient number, since it is larger than the sum of its proper divisors (13448057).

67240255 is a wasteful number, since it uses less digits than its factorization.

67240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448056.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 67240255 is about 8200.0155487657. The cubic root of 67240255 is about 406.6397071471.

The spelling of 67240255 in words is "sixty-seven million, two hundred forty thousand, two hundred fifty-five".