660066434 has 8 divisors (see below), whose sum is σ = 990329088. Its totient is φ = 329956740.

The previous prime is 660066389. The next prime is 660066439. The reversal of 660066434 is 434660066.

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

It is a junction number, because it is equal to n+sod(n) for n = 660066394 and 660066403.

It is not an unprimeable number, because it can be changed into a prime (660066439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26762 + ... + 45125.

It is an arithmetic number, because the mean of its divisors is an integer number (123791136).

Almost surely, 2^660066434 is an apocalyptic number.

660066434 is a deficient number, since it is larger than the sum of its proper divisors (330262654).

660066434 is a wasteful number, since it uses less digits than its factorization.

660066434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76480.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 660066434 is about 25691.7580947665. The cubic root of 660066434 is about 870.6879809376.

The spelling of 660066434 in words is "six hundred sixty million, sixty-six thousand, four hundred thirty-four".