66742852 has 12 divisors (see below), whose sum is σ = 127418256. Its totient is φ = 30337640.

The previous prime is 66742829. The next prime is 66742883. The reversal of 66742852 is 25824766.

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, 758398 + ... + 758485.

It is an arithmetic number, because the mean of its divisors is an integer number (10618188).

Almost surely, 2^66742852 is an apocalyptic number.

It is an amenable number.

66742852 is a deficient number, since it is larger than the sum of its proper divisors (60675404).

66742852 is a wasteful number, since it uses less digits than its factorization.

66742852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516898 (or 1516896 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 66742852 is about 8169.6298569764. The cubic root of 66742852 is about 405.6345324338.

The spelling of 66742852 in words is "sixty-six million, seven hundred forty-two thousand, eight hundred fifty-two".