68193641 has 4 divisors (see below), whose sum is σ = 71782800. Its totient is φ = 64604484.

The previous prime is 68193637. The next prime is 68193673. The reversal of 68193641 is 14639186.

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 not a de Polignac number, because 68193641 - 2² = 68193637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68193595 and 68193604.

It is not an unprimeable number, because it can be changed into a prime (68193691) 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, 1794551 + ... + 1794588.

It is an arithmetic number, because the mean of its divisors is an integer number (17945700).

Almost surely, 2^68193641 is an apocalyptic number.

It is an amenable number.

68193641 is a deficient number, since it is larger than the sum of its proper divisors (3589159).

68193641 is a wasteful number, since it uses less digits than its factorization.

68193641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589158.

The product of its digits is 31104, while the sum is 38.

The square root of 68193641 is about 8257.9441146087. The cubic root of 68193641 is about 408.5525821130.

The spelling of 68193641 in words is "sixty-eight million, one hundred ninety-three thousand, six hundred forty-one".