66116444 has 12 divisors (see below), whose sum is σ = 120734544. Its totient is φ = 31620864.

The previous prime is 66116429. The next prime is 66116483. The reversal of 66116444 is 44461166.

It is a self number, because there is not a number n which added to its sum of digits gives 66116444.

It is a congruent number.

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, 359237 + ... + 359420.

It is an arithmetic number, because the mean of its divisors is an integer number (10061212).

Almost surely, 2^66116444 is an apocalyptic number.

It is an amenable number.

66116444 is a deficient number, since it is larger than the sum of its proper divisors (54618100).

66116444 is a wasteful number, since it uses less digits than its factorization.

66116444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718684 (or 718682 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 66116444 is about 8131.2018791812. The cubic root of 66116444 is about 404.3615281614.

The spelling of 66116444 in words is "sixty-six million, one hundred sixteen thousand, four hundred forty-four".