68395151 has 4 divisors (see below), whose sum is σ = 74612904. Its totient is φ = 62177400.

The previous prime is 68395109. The next prime is 68395163. The reversal of 68395151 is 15159386.

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 68395151 - 2¹⁸ = 68133007 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 (68395451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108860 + ... + 3108881.

It is an arithmetic number, because the mean of its divisors is an integer number (18653226).

Almost surely, 2^68395151 is an apocalyptic number.

68395151 is a deficient number, since it is larger than the sum of its proper divisors (6217753).

68395151 is a wasteful number, since it uses less digits than its factorization.

68395151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217752.

The product of its digits is 32400, while the sum is 38.

The square root of 68395151 is about 8270.1360931970. The cubic root of 68395151 is about 408.9546062648.

The spelling of 68395151 in words is "sixty-eight million, three hundred ninety-five thousand, one hundred fifty-one".