66934944 has 48 divisors (see below), whose sum is σ = 195229440. Its totient is φ = 22311360.

The previous prime is 66934939. The next prime is 66934957. The reversal of 66934944 is 44943966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 66934944.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37872 + ... + 39599.

It is an arithmetic number, because the mean of its divisors is an integer number (4067280).

Almost surely, 2^66934944 is an apocalyptic number.

It is an amenable number.

66934944 is an abundant number, since it is smaller than the sum of its proper divisors (128294496).

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

66934944 is a wasteful number, since it uses less digits than its factorization.

66934944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77490 (or 77476 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 66934944 is about 8181.3778790617. The cubic root of 66934944 is about 406.0233107212.

The spelling of 66934944 in words is "sixty-six million, nine hundred thirty-four thousand, nine hundred forty-four".