68941393 has 4 divisors (see below), whose sum is σ = 70242228. Its totient is φ = 67640560.

The previous prime is 68941391. The next prime is 68941403. The reversal of 68941393 is 39314986.

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 19210689 + 49730704 = 4383^2 + 7052^2 .

It is a cyclic number.

It is not a de Polignac number, because 68941393 - 2¹ = 68941391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68941391) 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, 650338 + ... + 650443.

It is an arithmetic number, because the mean of its divisors is an integer number (17560557).

Almost surely, 2^68941393 is an apocalyptic number.

It is an amenable number.

68941393 is a deficient number, since it is larger than the sum of its proper divisors (1300835).

68941393 is a wasteful number, since it uses less digits than its factorization.

68941393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300834.

The product of its digits is 139968, while the sum is 43.

The square root of 68941393 is about 8303.0953866615. The cubic root of 68941393 is about 410.0404342435.

The spelling of 68941393 in words is "sixty-eight million, nine hundred forty-one thousand, three hundred ninety-three".