66572535 has 8 divisors (see below), whose sum is σ = 106516080. Its totient is φ = 35505344.

The previous prime is 66572503. The next prime is 66572537. The reversal of 66572535 is 53527566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66572535 - 2⁵ = 66572503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66572493 and 66572502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66572537) 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 7 ways as a sum of consecutive naturals, for example, 2219070 + ... + 2219099.

It is an arithmetic number, because the mean of its divisors is an integer number (13314510).

Almost surely, 2^66572535 is an apocalyptic number.

66572535 is a deficient number, since it is larger than the sum of its proper divisors (39943545).

66572535 is a wasteful number, since it uses less digits than its factorization.

66572535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438177.

The product of its digits is 189000, while the sum is 39.

The square root of 66572535 is about 8159.1994092558. The cubic root of 66572535 is about 405.2892005424.

The spelling of 66572535 in words is "sixty-six million, five hundred seventy-two thousand, five hundred thirty-five".