68148191 has 16 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 64062720.

The previous prime is 68148187. The next prime is 68148209. The reversal of 68148191 is 19184186.

It is a cyclic number.

It is not a de Polignac number, because 68148191 - 2² = 68148187 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 (68148151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253205 + ... + 253473.

It is an arithmetic number, because the mean of its divisors is an integer number (4524660).

Almost surely, 2^68148191 is an apocalyptic number.

68148191 is a deficient number, since it is larger than the sum of its proper divisors (4246369).

68148191 is a wasteful number, since it uses less digits than its factorization.

68148191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its digits is 13824, while the sum is 38.

The square root of 68148191 is about 8255.1917603409. The cubic root of 68148191 is about 408.4617972960.

The spelling of 68148191 in words is "sixty-eight million, one hundred forty-eight thousand, one hundred ninety-one".