68053493 has 4 divisors (see below), whose sum is σ = 68173248. Its totient is φ = 67933740.

The previous prime is 68053487. The next prime is 68053501. The reversal of 68053493 is 39435086.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39435086 = 2 ⋅19717543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68053493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68053483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59021 + ... + 60162.

It is an arithmetic number, because the mean of its divisors is an integer number (17043312).

Almost surely, 2^68053493 is an apocalyptic number.

It is an amenable number.

68053493 is a deficient number, since it is larger than the sum of its proper divisors (119755).

68053493 is a wasteful number, since it uses less digits than its factorization.

68053493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119754.

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

The square root of 68053493 is about 8249.4541031513. The cubic root of 68053493 is about 408.2725115389.

The spelling of 68053493 in words is "sixty-eight million, fifty-three thousand, four hundred ninety-three".