66730337 has 16 divisors (see below), whose sum is σ = 73681920. Its totient is φ = 60152400.

The previous prime is 66730333. The next prime is 66730343. The reversal of 66730337 is 73303766.

It is a cyclic number.

It is not a de Polignac number, because 66730337 - 2² = 66730333 is a prime.

It is a super-2 number, since 2×66730337² = 8905875752267138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66730297 and 66730306.

It is not an unprimeable number, because it can be changed into a prime (66730333) 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, 135662 + ... + 136152.

It is an arithmetic number, because the mean of its divisors is an integer number (4605120).

Almost surely, 2^66730337 is an apocalyptic number.

It is an amenable number.

66730337 is a deficient number, since it is larger than the sum of its proper divisors (6951583).

66730337 is a wasteful number, since it uses less digits than its factorization.

66730337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844.

The product of its (nonzero) digits is 47628, while the sum is 35.

The square root of 66730337 is about 8168.8638744932. The cubic root of 66730337 is about 405.6091772417.

The spelling of 66730337 in words is "sixty-six million, seven hundred thirty thousand, three hundred thirty-seven".