66718142 has 16 divisors (see below), whose sum is σ = 101401632. Its totient is φ = 32920800.

The previous prime is 66718129. The next prime is 66718153. The reversal of 66718142 is 24181766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51608 + ... + 52884.

It is an arithmetic number, because the mean of its divisors is an integer number (6337602).

Almost surely, 2^66718142 is an apocalyptic number.

66718142 is a deficient number, since it is larger than the sum of its proper divisors (34683490).

66718142 is a wasteful number, since it uses less digits than its factorization.

66718142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603.

The product of its digits is 16128, while the sum is 35.

The square root of 66718142 is about 8168.1174085587. The cubic root of 66718142 is about 405.5844673147.

The spelling of 66718142 in words is "sixty-six million, seven hundred eighteen thousand, one hundred forty-two".