68457151 has 4 divisors (see below), whose sum is σ = 78236752. Its totient is φ = 58677552.

The previous prime is 68457143. The next prime is 68457157. The reversal of 68457151 is 15175486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15175486 = 2 ⋅7587743.

It is a cyclic number.

It is not a de Polignac number, because 68457151 - 2³ = 68457143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68457151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68457157) 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, 4889790 + ... + 4889803.

It is an arithmetic number, because the mean of its divisors is an integer number (19559188).

Almost surely, 2^68457151 is an apocalyptic number.

68457151 is a deficient number, since it is larger than the sum of its proper divisors (9779601).

68457151 is an equidigital number, since it uses as much as digits as its factorization.

68457151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779600.

The product of its digits is 33600, while the sum is 37.

The square root of 68457151 is about 8273.8836709250. The cubic root of 68457151 is about 409.0781409872.

The spelling of 68457151 in words is "sixty-eight million, four hundred fifty-seven thousand, one hundred fifty-one".