68530493 has 4 divisors (see below), whose sum is σ = 68593728. Its totient is φ = 68467260.

The previous prime is 68530471. The next prime is 68530523. The reversal of 68530493 is 39403586.

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 68530493 - 2⁸ = 68530237 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 (68532493) 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, 29963 + ... + 32168.

It is an arithmetic number, because the mean of its divisors is an integer number (17148432).

Almost surely, 2^68530493 is an apocalyptic number.

It is an amenable number.

68530493 is a deficient number, since it is larger than the sum of its proper divisors (63235).

68530493 is a wasteful number, since it uses less digits than its factorization.

68530493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63234.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 68530493 is about 8278.3146231585. The cubic root of 68530493 is about 409.2241783281.

The spelling of 68530493 in words is "sixty-eight million, five hundred thirty thousand, four hundred ninety-three".