66941737 has 8 divisors (see below), whose sum is σ = 67839912. Its totient is φ = 66048000.

The previous prime is 66941729. The next prime is 66941761. The reversal of 66941737 is 73714966.

It can be written as a sum of positive squares in 4 ways, for example, as 36735721 + 30206016 = 6061^2 + 5496^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66941737 - 2³ = 66941729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66941693 and 66941702.

It is not an unprimeable number, because it can be changed into a prime (66911737) 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 7 ways as a sum of consecutive naturals, for example, 38037 + ... + 39757.

It is an arithmetic number, because the mean of its divisors is an integer number (8479989).

Almost surely, 2^66941737 is an apocalyptic number.

It is an amenable number.

66941737 is a deficient number, since it is larger than the sum of its proper divisors (898175).

66941737 is a wasteful number, since it uses less digits than its factorization.

66941737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its digits is 190512, while the sum is 43.

The square root of 66941737 is about 8181.7930186482. The cubic root of 66941737 is about 406.0370455653.

The spelling of 66941737 in words is "sixty-six million, nine hundred forty-one thousand, seven hundred thirty-seven".