66005414 has 8 divisors (see below), whose sum is σ = 99601488. Its totient is φ = 32804920.

The previous prime is 66005389. The next prime is 66005453. The reversal of 66005414 is 41450066.

It is a happy number.

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

It is a super-2 number, since 2×66005414² = 8713429354622792, which contains 22 as substring.

It is a congruent number.

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, 98477 + ... + 99144.

It is an arithmetic number, because the mean of its divisors is an integer number (12450186).

Almost surely, 2^66005414 is an apocalyptic number.

66005414 is a deficient number, since it is larger than the sum of its proper divisors (33596074).

66005414 is a wasteful number, since it uses less digits than its factorization.

66005414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197790.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66005414 is about 8124.3716064690. The cubic root of 66005414 is about 404.1350518982.

The spelling of 66005414 in words is "sixty-six million, five thousand, four hundred fourteen".