66112642 has 16 divisors (see below), whose sum is σ = 100714680. Its totient is φ = 32545152.

The previous prime is 66112639. The next prime is 66112661. The reversal of 66112642 is 24621166.

It can be written as a sum of positive squares in 4 ways, for example, as 57927321 + 8185321 = 7611^2 + 2861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66112642.

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, 36838 + ... + 38590.

Almost surely, 2^66112642 is an apocalyptic number.

66112642 is a deficient number, since it is larger than the sum of its proper divisors (34602038).

66112642 is a wasteful number, since it uses less digits than its factorization.

66112642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037.

The product of its digits is 3456, while the sum is 28.

The square root of 66112642 is about 8130.9680850437. The cubic root of 66112642 is about 404.3537771295.

The spelling of 66112642 in words is "sixty-six million, one hundred twelve thousand, six hundred forty-two".