66665463 has 8 divisors (see below), whose sum is σ = 89218800. Its totient is φ = 44277888.

The previous prime is 66665447. The next prime is 66665479. The reversal of 66665463 is 36456666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66665447) and next prime (66665479).

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

It is not a de Polignac number, because 66665463 - 2⁴ = 66665447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66665413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40498 + ... + 42111.

It is an arithmetic number, because the mean of its divisors is an integer number (11152350).

Almost surely, 2^66665463 is an apocalyptic number.

66665463 is a deficient number, since it is larger than the sum of its proper divisors (22553337).

66665463 is a wasteful number, since it uses less digits than its factorization.

66665463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82881.

The product of its digits is 466560, while the sum is 42.

The square root of 66665463 is about 8164.8920997157. The cubic root of 66665463 is about 405.4776927089.

The spelling of 66665463 in words is "sixty-six million, six hundred sixty-five thousand, four hundred sixty-three".