66274149 has 8 divisors (see below), whose sum is σ = 88814880. Its totient is φ = 43958096.

The previous prime is 66274139. The next prime is 66274199. The reversal of 66274149 is 94147266.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66274149 - 2⁴ = 66274133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66274139) 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, 55479 + ... + 56660.

It is an arithmetic number, because the mean of its divisors is an integer number (11101860).

Almost surely, 2^66274149 is an apocalyptic number.

It is an amenable number.

66274149 is a deficient number, since it is larger than the sum of its proper divisors (22540731).

66274149 is a wasteful number, since it uses less digits than its factorization.

66274149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112339.

The product of its digits is 72576, while the sum is 39.

The square root of 66274149 is about 8140.8936241668. The cubic root of 66274149 is about 404.6827755216.

The spelling of 66274149 in words is "sixty-six million, two hundred seventy-four thousand, one hundred forty-nine".