66114644 has 6 divisors (see below), whose sum is σ = 115700634. Its totient is φ = 33057320.

The previous prime is 66114641. The next prime is 66114689. The reversal of 66114644 is 44641166.

66114644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 19465744 = 6830^2 + 4412^2 .

It is a super-2 number, since 2×66114644² = 8742292302493472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66114644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66114641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8264327 + ... + 8264334.

It is an arithmetic number, because the mean of its divisors is an integer number (19283439).

Almost surely, 2^66114644 is an apocalyptic number.

It is an amenable number.

66114644 is a deficient number, since it is larger than the sum of its proper divisors (49585990).

66114644 is a wasteful number, since it uses less digits than its factorization.

66114644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16528665 (or 16528663 counting only the distinct ones).

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

The square root of 66114644 is about 8131.0911936837. The cubic root of 66114644 is about 404.3578585884.

The spelling of 66114644 in words is "sixty-six million, one hundred fourteen thousand, six hundred forty-four".