66175372 has 6 divisors (see below), whose sum is σ = 115806908. Its totient is φ = 33087684.

The previous prime is 66175363. The next prime is 66175379. The reversal of 66175372 is 27357166.

66175372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66175379) 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, 8271918 + ... + 8271925.

Almost surely, 2^66175372 is an apocalyptic number.

It is an amenable number.

66175372 is a deficient number, since it is larger than the sum of its proper divisors (49631536).

66175372 is a wasteful number, since it uses less digits than its factorization.

66175372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16543847 (or 16543845 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 66175372 is about 8134.8246446989. The cubic root of 66175372 is about 404.4816250643.

It can be divided in two parts, 661753 and 72, that added together give a triangular number (661825 = T₁₁₅₀).

The spelling of 66175372 in words is "sixty-six million, one hundred seventy-five thousand, three hundred seventy-two".