68504357 has 4 divisors (see below), whose sum is σ = 68848800. Its totient is φ = 68159916.

The previous prime is 68504341. The next prime is 68504363. The reversal of 68504357 is 75340586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68504357 - 2⁴ = 68504341 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 68504357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68504377) 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, 171923 + ... + 172320.

It is an arithmetic number, because the mean of its divisors is an integer number (17212200).

Almost surely, 2^68504357 is an apocalyptic number.

It is an amenable number.

68504357 is a deficient number, since it is larger than the sum of its proper divisors (344443).

68504357 is a wasteful number, since it uses less digits than its factorization.

68504357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344442.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 68504357 is about 8276.7358904341. The cubic root of 68504357 is about 409.1721487249.

The spelling of 68504357 in words is "sixty-eight million, five hundred four thousand, three hundred fifty-seven".