68546129 has 4 divisors (see below), whose sum is σ = 72153840. Its totient is φ = 64938420.

The previous prime is 68546123. The next prime is 68546173. The reversal of 68546129 is 92164586.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92164586 = 2 ⋅46082293.

It is a cyclic number.

It is not a de Polignac number, because 68546129 - 2¹⁶ = 68480593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68546123) 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, 1803827 + ... + 1803864.

It is an arithmetic number, because the mean of its divisors is an integer number (18038460).

Almost surely, 2^68546129 is an apocalyptic number.

It is an amenable number.

68546129 is a deficient number, since it is larger than the sum of its proper divisors (3607711).

68546129 is a wasteful number, since it uses less digits than its factorization.

68546129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607710.

The product of its digits is 103680, while the sum is 41.

The square root of 68546129 is about 8279.2589644243. The cubic root of 68546129 is about 409.2552989889.

The spelling of 68546129 in words is "sixty-eight million, five hundred forty-six thousand, one hundred twenty-nine".