68454191 has 4 divisors (see below), whose sum is σ = 73719912. Its totient is φ = 63188472.

The previous prime is 68454163. The next prime is 68454203. The reversal of 68454191 is 19145486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19145486 = 2 ⋅9572743.

It is a cyclic number.

It is not a de Polignac number, because 68454191 - 2¹⁰ = 68453167 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 (68454391) 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, 2632841 + ... + 2632866.

It is an arithmetic number, because the mean of its divisors is an integer number (18429978).

Almost surely, 2^68454191 is an apocalyptic number.

68454191 is a deficient number, since it is larger than the sum of its proper divisors (5265721).

68454191 is a wasteful number, since it uses less digits than its factorization.

68454191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265720.

The product of its digits is 34560, while the sum is 38.

The square root of 68454191 is about 8273.7047928966. The cubic root of 68454191 is about 409.0722448963.

The spelling of 68454191 in words is "sixty-eight million, four hundred fifty-four thousand, one hundred ninety-one".