66075424 has 12 divisors (see below), whose sum is σ = 130086054. Its totient is φ = 33037696.

The previous prime is 66075421. The next prime is 66075463. The reversal of 66075424 is 42457066.

It can be written as a sum of positive squares in only one way, i.e., 50865424 + 15210000 = 7132^2 + 3900^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66075424.

It is not an unprimeable number, because it can be changed into a prime (66075421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032397 + ... + 1032460.

Almost surely, 2^66075424 is an apocalyptic number.

It is an amenable number.

66075424 is a deficient number, since it is larger than the sum of its proper divisors (64010630).

66075424 is a wasteful number, since it uses less digits than its factorization.

66075424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064867 (or 2064859 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 66075424 is about 8128.6791054882. The cubic root of 66075424 is about 404.2778861285.

The spelling of 66075424 in words is "sixty-six million, seventy-five thousand, four hundred twenty-four".