66041434 has 4 divisors (see below), whose sum is σ = 99062154. Its totient is φ = 33020716.

The previous prime is 66041401. The next prime is 66041453. The reversal of 66041434 is 43414066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51624225 + 14417209 = 7185^2 + 3797^2 .

It is a super-2 number, since 2×66041434² = 8722942009552712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510357 + ... + 16510360.

Almost surely, 2^66041434 is an apocalyptic number.

66041434 is a deficient number, since it is larger than the sum of its proper divisors (33020720).

66041434 is a wasteful number, since it uses less digits than its factorization.

66041434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33020719.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 66041434 is about 8126.5880909518. The cubic root of 66041434 is about 404.2085524215.

The spelling of 66041434 in words is "sixty-six million, forty-one thousand, four hundred thirty-four".