66532463 has 4 divisors (see below), whose sum is σ = 68155248. Its totient is φ = 64909680.

The previous prime is 66532447. The next prime is 66532511. The reversal of 66532463 is 36423566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36423566 = 2 ⋅18211783.

It is a cyclic number.

It is not a de Polignac number, because 66532463 - 2⁴ = 66532447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66532363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811331 + ... + 811412.

It is an arithmetic number, because the mean of its divisors is an integer number (17038812).

Almost surely, 2^66532463 is an apocalyptic number.

66532463 is a deficient number, since it is larger than the sum of its proper divisors (1622785).

66532463 is a wasteful number, since it uses less digits than its factorization.

66532463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622784.

The product of its digits is 77760, while the sum is 35.

The square root of 66532463 is about 8156.7434065318. The cubic root of 66532463 is about 405.2078656569.

The spelling of 66532463 in words is "sixty-six million, five hundred thirty-two thousand, four hundred sixty-three".