66730741 has 16 divisors (see below), whose sum is σ = 84971520. Its totient is φ = 50888880.

The previous prime is 66730709. The next prime is 66730757. The reversal of 66730741 is 14703766.

It is not a de Polignac number, because 66730741 - 2⁵ = 66730709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66730697 and 66730706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66730141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5601 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (5310720).

Almost surely, 2^66730741 is an apocalyptic number.

It is an amenable number.

66730741 is a deficient number, since it is larger than the sum of its proper divisors (18240779).

66730741 is a wasteful number, since it uses less digits than its factorization.

66730741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18504.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 66730741 is about 8168.8886024967. Note that the first 3 decimals coincide. The cubic root of 66730741 is about 405.6099957888.

The spelling of 66730741 in words is "sixty-six million, seven hundred thirty thousand, seven hundred forty-one".