66707927 has 12 divisors (see below), whose sum is σ = 78485064. Its totient is φ = 55896720.

The previous prime is 66707923. The next prime is 66707959. The reversal of 66707927 is 72970766.

It is not a de Polignac number, because 66707927 - 2² = 66707923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66707923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97328 + ... + 98010.

It is an arithmetic number, because the mean of its divisors is an integer number (6540422).

Almost surely, 2^66707927 is an apocalyptic number.

66707927 is a deficient number, since it is larger than the sum of its proper divisors (11777137).

66707927 is an equidigital number, since it uses as much as digits as its factorization.

66707927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 66707927 is about 8167.4920875383. The cubic root of 66707927 is about 405.5637670140.

The spelling of 66707927 in words is "sixty-six million, seven hundred seven thousand, nine hundred twenty-seven".