66352545 has 24 divisors (see below), whose sum is σ = 131441856. Its totient is φ = 30332448.

The previous prime is 66352523. The next prime is 66352577. The reversal of 66352545 is 54525366.

It is a happy number.

66352545 is a `hidden beast` number, since 6 + 63 + 52 + 545 = 666.

It is not a de Polignac number, because 66352545 - 2¹⁰ = 66351521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105007 + ... + 105636.

It is an arithmetic number, because the mean of its divisors is an integer number (5476744).

Almost surely, 2^66352545 is an apocalyptic number.

It is an amenable number.

66352545 is a deficient number, since it is larger than the sum of its proper divisors (65089311).

66352545 is a wasteful number, since it uses less digits than its factorization.

66352545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210661 (or 210658 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 66352545 is about 8145.7071516229. The cubic root of 66352545 is about 404.8422796930.

It can be divided in two parts, 6635 and 2545, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 66352545 in words is "sixty-six million, three hundred fifty-two thousand, five hundred forty-five".