66572463 has 4 divisors (see below), whose sum is σ = 88763288. Its totient is φ = 44381640.

The previous prime is 66572461. The next prime is 66572489. The reversal of 66572463 is 36427566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66572463 - 2¹ = 66572461 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 (66572461) 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, 11095408 + ... + 11095413.

It is an arithmetic number, because the mean of its divisors is an integer number (22190822).

Almost surely, 2^66572463 is an apocalyptic number.

66572463 is a deficient number, since it is larger than the sum of its proper divisors (22190825).

66572463 is a wasteful number, since it uses less digits than its factorization.

66572463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22190824.

The product of its digits is 181440, while the sum is 39.

The square root of 66572463 is about 8159.1949970570. The cubic root of 66572463 is about 405.2890544320.

The spelling of 66572463 in words is "sixty-six million, five hundred seventy-two thousand, four hundred sixty-three".