66414434 has 8 divisors (see below), whose sum is σ = 99859548. Its totient is φ = 33127920.

The previous prime is 66414419. The next prime is 66414473. The reversal of 66414434 is 43441466.

It can be written as a sum of positive squares in 2 ways, for example, as 54834025 + 11580409 = 7405^2 + 3403^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66414434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38597 + ... + 40280.

Almost surely, 2^66414434 is an apocalyptic number.

66414434 is a deficient number, since it is larger than the sum of its proper divisors (33445114).

66414434 is a wasteful number, since it uses less digits than its factorization.

66414434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79300.

The product of its digits is 27648, while the sum is 32.

The square root of 66414434 is about 8149.5051383504. The cubic root of 66414434 is about 404.9681100735.

The spelling of 66414434 in words is "sixty-six million, four hundred fourteen thousand, four hundred thirty-four".