66957044 has 36 divisors (see below), whose sum is σ = 147202272. Its totient is φ = 26085840.

The previous prime is 66957043. The next prime is 66957049. The reversal of 66957044 is 44075966.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66956992 and 66957010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66957043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6494 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (4088952).

Almost surely, 2^66957044 is an apocalyptic number.

It is an amenable number.

66957044 is an abundant number, since it is smaller than the sum of its proper divisors (80245228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66957044 is a wasteful number, since it uses less digits than its factorization.

66957044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19796 (or 19783 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 66957044 is about 8182.7283958347. The cubic root of 66957044 is about 406.0679915574.

The spelling of 66957044 in words is "sixty-six million, nine hundred fifty-seven thousand, forty-four".