68612641 has 4 divisors (see below), whose sum is σ = 70825984. Its totient is φ = 66399300.

The previous prime is 68612569. The next prime is 68612647. The reversal of 68612641 is 14621686.

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: 14621686 = 2 ⋅7310843.

It is a cyclic number.

It is not a de Polignac number, because 68612641 - 2⁷ = 68612513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68612597 and 68612606.

It is not an unprimeable number, because it can be changed into a prime (68612647) 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, 1106625 + ... + 1106686.

It is an arithmetic number, because the mean of its divisors is an integer number (17706496).

Almost surely, 2^68612641 is an apocalyptic number.

It is an amenable number.

68612641 is a deficient number, since it is larger than the sum of its proper divisors (2213343).

68612641 is a wasteful number, since it uses less digits than its factorization.

68612641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213342.

The product of its digits is 13824, while the sum is 34.

The square root of 68612641 is about 8283.2747751116. The cubic root of 68612641 is about 409.3876263689.

The spelling of 68612641 in words is "sixty-eight million, six hundred twelve thousand, six hundred forty-one".