66463545 has 32 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 34776000.

The previous prime is 66463543. The next prime is 66463547. The reversal of 66463545 is 54536466.

It is an interprime number because it is at equal distance from previous prime (66463543) and next prime (66463547).

It is not a de Polignac number, because 66463545 - 2¹ = 66463543 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66463543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264670 + ... + 264920.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^66463545 is an apocalyptic number.

It is an amenable number.

66463545 is a deficient number, since it is larger than the sum of its proper divisors (41916615).

66463545 is a wasteful number, since it uses less digits than its factorization.

66463545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its digits is 259200, while the sum is 39.

The square root of 66463545 is about 8152.5177092724. The cubic root of 66463545 is about 405.0679050901.

The spelling of 66463545 in words is "sixty-six million, four hundred sixty-three thousand, five hundred forty-five".