66149206 has 16 divisors (see below), whose sum is σ = 100220400. Its totient is φ = 32744448.

The previous prime is 66149197. The next prime is 66149231. The reversal of 66149206 is 60294166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157665 + ... + 158083.

It is an arithmetic number, because the mean of its divisors is an integer number (6263775).

Almost surely, 2^66149206 is an apocalyptic number.

66149206 is a deficient number, since it is larger than the sum of its proper divisors (34071194).

66149206 is a wasteful number, since it uses less digits than its factorization.

66149206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66149206 is about 8133.2162150038. The cubic root of 66149206 is about 404.4283068326.

The spelling of 66149206 in words is "sixty-six million, one hundred forty-nine thousand, two hundred six".