666737027 has 8 divisors (see below), whose sum is σ = 732168192. Its totient is φ = 602109000.

The previous prime is 666737021. The next prime is 666737083. The reversal of 666737027 is 720737666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666737027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666737021) 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, 199043 + ... + 202364.

It is an arithmetic number, because the mean of its divisors is an integer number (91521024).

Almost surely, 2^666737027 is an apocalyptic number.

666737027 is a deficient number, since it is larger than the sum of its proper divisors (65431165).

666737027 is a wasteful number, since it uses less digits than its factorization.

666737027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401569.

The product of its (nonzero) digits is 444528, while the sum is 44.

The square root of 666737027 is about 25821.2514607639. The cubic root of 666737027 is about 873.6111963615.

The spelling of 666737027 in words is "six hundred sixty-six million, seven hundred thirty-seven thousand, twenty-seven".