66414266 has 4 divisors (see below), whose sum is σ = 99621402. Its totient is φ = 33207132.

The previous prime is 66414239. The next prime is 66414277. The reversal of 66414266 is 66241466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66241466 = 2 ⋅33120733.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 4713241 = 7855^2 + 2171^2 .

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 as a sum of consecutive naturals, namely, 16603565 + ... + 16603568.

Almost surely, 2^66414266 is an apocalyptic number.

66414266 is a deficient number, since it is larger than the sum of its proper divisors (33207136).

66414266 is a wasteful number, since it uses less digits than its factorization.

66414266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33207135.

The product of its digits is 41472, while the sum is 35.

The square root of 66414266 is about 8149.4948309696. The cubic root of 66414266 is about 404.9677686081.

The spelling of 66414266 in words is "sixty-six million, four hundred fourteen thousand, two hundred sixty-six".