66531214 has 8 divisors (see below), whose sum is σ = 100093968. Its totient is φ = 33166560.

The previous prime is 66531197. The next prime is 66531229. The reversal of 66531214 is 41213566.

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

It is a congruent 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, 48682 + ... + 50029.

It is an arithmetic number, because the mean of its divisors is an integer number (12511746).

Almost surely, 2^66531214 is an apocalyptic number.

66531214 is a deficient number, since it is larger than the sum of its proper divisors (33562754).

66531214 is a wasteful number, since it uses less digits than its factorization.

66531214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99050.

The product of its digits is 4320, while the sum is 28.

The square root of 66531214 is about 8156.6668437543. Note that the first 3 decimals coincide. The cubic root of 66531214 is about 405.2053300136.

The spelling of 66531214 in words is "sixty-six million, five hundred thirty-one thousand, two hundred fourteen".