68337661 has 12 divisors (see below), whose sum is σ = 82430112. Its totient is φ = 55490184.

The previous prime is 68337649. The next prime is 68337673. The reversal of 68337661 is 16673386.

It is an interprime number because it is at equal distance from previous prime (68337649) and next prime (68337673).

It is not a de Polignac number, because 68337661 - 2⁹ = 68337149 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 (68337691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10995 + ... + 16048.

It is an arithmetic number, because the mean of its divisors is an integer number (6869176).

Almost surely, 2^68337661 is an apocalyptic number.

It is an amenable number.

68337661 is a deficient number, since it is larger than the sum of its proper divisors (14092451).

68337661 is a wasteful number, since it uses less digits than its factorization.

68337661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27088 (or 27069 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 68337661 is about 8266.6596034916. The cubic root of 68337661 is about 408.8399909720.

The spelling of 68337661 in words is "sixty-eight million, three hundred thirty-seven thousand, six hundred sixty-one".