66909327 has 8 divisors (see below), whose sum is σ = 89250480. Its totient is φ = 44587200.

The previous prime is 66909319. The next prime is 66909329. The reversal of 66909327 is 72390966.

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

It is not a de Polignac number, because 66909327 - 2³ = 66909319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66909329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9949 + ... + 15257.

It is an arithmetic number, because the mean of its divisors is an integer number (11156310).

Almost surely, 2^66909327 is an apocalyptic number.

66909327 is a deficient number, since it is larger than the sum of its proper divisors (22341153).

66909327 is a wasteful number, since it uses less digits than its factorization.

66909327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 66909327 is about 8179.8121616575. The cubic root of 66909327 is about 405.9715070559.

The spelling of 66909327 in words is "sixty-six million, nine hundred nine thousand, three hundred twenty-seven".