66046544 has 20 divisors (see below), whose sum is σ = 129405780. Its totient is φ = 32651520.

The previous prime is 66046511. The next prime is 66046549. The reversal of 66046544 is 44564066.

It can be written as a sum of positive squares in 2 ways, for example, as 27457600 + 38588944 = 5240^2 + 6212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66046549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21767 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (6470289).

Almost surely, 2^66046544 is an apocalyptic number.

It is an amenable number.

66046544 is a deficient number, since it is larger than the sum of its proper divisors (63359236).

66046544 is a wasteful number, since it uses less digits than its factorization.

66046544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46478 (or 46472 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 66046544 is about 8126.9024849570. The cubic root of 66046544 is about 404.2189774547.

The spelling of 66046544 in words is "sixty-six million, forty-six thousand, five hundred forty-four".