68122149 has 4 divisors (see below), whose sum is σ = 90829536. Its totient is φ = 45414764.

The previous prime is 68122127. The next prime is 68122151. The reversal of 68122149 is 94122186.

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 a cyclic number.

It is not a de Polignac number, because 68122149 - 2¹⁹ = 67597861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68122199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11353689 + ... + 11353694.

It is an arithmetic number, because the mean of its divisors is an integer number (22707384).

Almost surely, 2^68122149 is an apocalyptic number.

It is an amenable number.

68122149 is a deficient number, since it is larger than the sum of its proper divisors (22707387).

68122149 is a wasteful number, since it uses less digits than its factorization.

68122149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22707386.

The product of its digits is 6912, while the sum is 33.

The square root of 68122149 is about 8253.6142992025. The cubic root of 68122149 is about 408.4097611025.

The spelling of 68122149 in words is "sixty-eight million, one hundred twenty-two thousand, one hundred forty-nine".