68241091 has 4 divisors (see below), whose sum is σ = 68659912. Its totient is φ = 67822272.

The previous prime is 68241083. The next prime is 68241113. The reversal of 68241091 is 19014286.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68241091 - 2³ = 68241083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68241001) 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, 209166 + ... + 209491.

It is an arithmetic number, because the mean of its divisors is an integer number (17164978).

Almost surely, 2^68241091 is an apocalyptic number.

68241091 is a deficient number, since it is larger than the sum of its proper divisors (418821).

68241091 is a wasteful number, since it uses less digits than its factorization.

68241091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418820.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 68241091 is about 8260.8166061232. The cubic root of 68241091 is about 408.6473188322.

The spelling of 68241091 in words is "sixty-eight million, two hundred forty-one thousand, ninety-one".