68557741 has 4 divisors (see below), whose sum is σ = 78351712. Its totient is φ = 58763772.

The previous prime is 68557739. The next prime is 68557763. The reversal of 68557741 is 14775586.

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 68557741 - 2¹ = 68557739 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 (68557241) 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, 4896975 + ... + 4896988.

It is an arithmetic number, because the mean of its divisors is an integer number (19587928).

Almost surely, 2^68557741 is an apocalyptic number.

It is an amenable number.

68557741 is a deficient number, since it is larger than the sum of its proper divisors (9793971).

68557741 is an equidigital number, since it uses as much as digits as its factorization.

68557741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9793970.

The product of its digits is 235200, while the sum is 43.

The square root of 68557741 is about 8279.9602052184. The cubic root of 68557741 is about 409.2784075353.

The spelling of 68557741 in words is "sixty-eight million, five hundred fifty-seven thousand, seven hundred forty-one".