66149205 has 16 divisors (see below), whose sum is σ = 105940224. Its totient is φ = 35245760.

The previous prime is 66149197. The next prime is 66149231. The reversal of 66149205 is 50294166.

It is not a de Polignac number, because 66149205 - 2³ = 66149197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26887 + ... + 29243.

It is an arithmetic number, because the mean of its divisors is an integer number (6621264).

Almost surely, 2^66149205 is an apocalyptic number.

It is an amenable number.

66149205 is a deficient number, since it is larger than the sum of its proper divisors (39791019).

66149205 is a wasteful number, since it uses less digits than its factorization.

66149205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 66149205 is about 8133.2161535275. The cubic root of 66149205 is about 404.4283047947.

The spelling of 66149205 in words is "sixty-six million, one hundred forty-nine thousand, two hundred five".