66798614 has 8 divisors (see below), whose sum is σ = 103430208. Its totient is φ = 32321880.

The previous prime is 66798607. The next prime is 66798619. The reversal of 66798614 is 41689766.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66798619) 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, 538637 + ... + 538760.

It is an arithmetic number, because the mean of its divisors is an integer number (12928776).

Almost surely, 2^66798614 is an apocalyptic number.

66798614 is a deficient number, since it is larger than the sum of its proper divisors (36631594).

66798614 is a wasteful number, since it uses less digits than its factorization.

66798614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077430.

The product of its digits is 435456, while the sum is 47.

The square root of 66798614 is about 8173.0419061693. The cubic root of 66798614 is about 405.7474668572.

The spelling of 66798614 in words is "sixty-six million, seven hundred ninety-eight thousand, six hundred fourteen".