66740930 has 8 divisors (see below), whose sum is σ = 120133692. Its totient is φ = 26696368.

The previous prime is 66740909. The next prime is 66740941. The reversal of 66740930 is 3904766.

It can be written as a sum of positive squares in 2 ways, for example, as 58782889 + 7958041 = 7667^2 + 2821^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337037 + ... + 3337056.

Almost surely, 2^66740930 is an apocalyptic number.

66740930 is a deficient number, since it is larger than the sum of its proper divisors (53392762).

66740930 is a wasteful number, since it uses less digits than its factorization.

66740930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674100.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66740930 is about 8169.5122253412. The cubic root of 66740930 is about 405.6306386982.

The spelling of 66740930 in words is "sixty-six million, seven hundred forty thousand, nine hundred thirty".