66357545 has 16 divisors (see below), whose sum is σ = 84758400. Its totient is φ = 49699584.

The previous prime is 66357527. The next prime is 66357547. The reversal of 66357545 is 54575366.

66357545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66357545 - 2¹⁴ = 66341161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66357547) 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 in 15 ways as a sum of consecutive naturals, for example, 14954 + ... + 18876.

It is an arithmetic number, because the mean of its divisors is an integer number (5297400).

Almost surely, 2^66357545 is an apocalyptic number.

It is an amenable number.

66357545 is a deficient number, since it is larger than the sum of its proper divisors (18400855).

66357545 is a wasteful number, since it uses less digits than its factorization.

66357545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144.

The product of its digits is 378000, while the sum is 41.

The square root of 66357545 is about 8146.0140559663. The cubic root of 66357545 is about 404.8524484090.

The spelling of 66357545 in words is "sixty-six million, three hundred fifty-seven thousand, five hundred forty-five".