68473253 has 4 divisors (see below), whose sum is σ = 69151308. Its totient is φ = 67795200.

The previous prime is 68473241. The next prime is 68473291. The reversal of 68473253 is 35237486.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48205249 + 20268004 = 6943^2 + 4502^2 .

It is a cyclic number.

It is not a de Polignac number, because 68473253 - 2⁶ = 68473189 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 (68473213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338876 + ... + 339077.

It is an arithmetic number, because the mean of its divisors is an integer number (17287827).

Almost surely, 2^68473253 is an apocalyptic number.

It is an amenable number.

68473253 is a deficient number, since it is larger than the sum of its proper divisors (678055).

68473253 is a wasteful number, since it uses less digits than its factorization.

68473253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678054.

The product of its digits is 120960, while the sum is 38.

The square root of 68473253 is about 8274.8566754960. The cubic root of 68473253 is about 409.1102119481.

It can be divided in two parts, 684 and 73253, that added together give a palindrome (73937).

The spelling of 68473253 in words is "sixty-eight million, four hundred seventy-three thousand, two hundred fifty-three".