66917230 has 8 divisors (see below), whose sum is σ = 120451032. Its totient is φ = 26766888.

The previous prime is 66917197. The next prime is 66917243. The reversal of 66917230 is 3271966.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3345852 + ... + 3345871.

It is an arithmetic number, because the mean of its divisors is an integer number (15056379).

Almost surely, 2^66917230 is an apocalyptic number.

66917230 is a deficient number, since it is larger than the sum of its proper divisors (53533802).

66917230 is a wasteful number, since it uses less digits than its factorization.

66917230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691730.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 66917230 is about 8180.2952269463. The cubic root of 66917230 is about 405.9874902113.

The spelling of 66917230 in words is "sixty-six million, nine hundred seventeen thousand, two hundred thirty".