66012790 has 8 divisors (see below), whose sum is σ = 118823040. Its totient is φ = 26405112.

The previous prime is 66012767. The next prime is 66012809. The reversal of 66012790 is 9721066.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300630 + ... + 3300649.

It is an arithmetic number, because the mean of its divisors is an integer number (14852880).

Almost surely, 2^66012790 is an apocalyptic number.

66012790 is a deficient number, since it is larger than the sum of its proper divisors (52810250).

66012790 is a wasteful number, since it uses less digits than its factorization.

66012790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601286.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 66012790 is about 8124.8255365885. The cubic root of 66012790 is about 404.1501051538.

The spelling of 66012790 in words is "sixty-six million, twelve thousand, seven hundred ninety".