68663293 has 4 divisors (see below), whose sum is σ = 69371260. Its totient is φ = 67955328.

The previous prime is 68663281. The next prime is 68663297. The reversal of 68663293 is 39236686.

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 52446564 + 16216729 = 7242^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 68663293 - 2²¹ = 66566141 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 (68663297) 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, 353838 + ... + 354031.

It is an arithmetic number, because the mean of its divisors is an integer number (17342815).

Almost surely, 2^68663293 is an apocalyptic number.

It is an amenable number.

68663293 is a deficient number, since it is larger than the sum of its proper divisors (707967).

68663293 is an equidigital number, since it uses as much as digits as its factorization.

68663293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707966.

The product of its digits is 279936, while the sum is 43.

The square root of 68663293 is about 8286.3316974401. The cubic root of 68663293 is about 409.4883425106.

The spelling of 68663293 in words is "sixty-eight million, six hundred sixty-three thousand, two hundred ninety-three".