68741661 has 4 divisors (see below), whose sum is σ = 91655552. Its totient is φ = 45827772.

The previous prime is 68741653. The next prime is 68741681. The reversal of 68741661 is 16614786.

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.

It is not a de Polignac number, because 68741661 - 2³ = 68741653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68741611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11456941 + ... + 11456946.

It is an arithmetic number, because the mean of its divisors is an integer number (22913888).

Almost surely, 2^68741661 is an apocalyptic number.

It is an amenable number.

68741661 is a deficient number, since it is larger than the sum of its proper divisors (22913891).

68741661 is a wasteful number, since it uses less digits than its factorization.

68741661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22913890.

The product of its digits is 48384, while the sum is 39.

The square root of 68741661 is about 8291.0591000185. The cubic root of 68741661 is about 409.6440714304.

The spelling of 68741661 in words is "sixty-eight million, seven hundred forty-one thousand, six hundred sixty-one".