66687327 has 64 divisors (see below), whose sum is σ = 122112000. Its totient is φ = 35193312.

The previous prime is 66687323. The next prime is 66687331. The reversal of 66687327 is 72378666.

It is an interprime number because it is at equal distance from previous prime (66687323) and next prime (66687331).

It is not a de Polignac number, because 66687327 - 2² = 66687323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66687323) 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 63 ways as a sum of consecutive naturals, for example, 2299549 + ... + 2299577.

It is an arithmetic number, because the mean of its divisors is an integer number (1908000).

Almost surely, 2^66687327 is an apocalyptic number.

66687327 is a deficient number, since it is larger than the sum of its proper divisors (55424673).

66687327 is an equidigital number, since it uses as much as digits as its factorization.

66687327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 62 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 66687327 is about 8166.2308931355. The cubic root of 66687327 is about 405.5220154855.

The spelling of 66687327 in words is "sixty-six million, six hundred eighty-seven thousand, three hundred twenty-seven".