66024473 has 4 divisors (see below), whose sum is σ = 67634868. Its totient is φ = 64414080.

The previous prime is 66024437. The next prime is 66024499. The reversal of 66024473 is 37442066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37442066 = 2 ⋅18721033.

It can be written as a sum of positive squares in 2 ways, for example, as 29506624 + 36517849 = 5432^2 + 6043^2 .

It is a cyclic number.

It is not a de Polignac number, because 66024473 - 2¹⁰ = 66023449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66024403) 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, 805136 + ... + 805217.

It is an arithmetic number, because the mean of its divisors is an integer number (16908717).

Almost surely, 2^66024473 is an apocalyptic number.

It is an amenable number.

66024473 is a deficient number, since it is larger than the sum of its proper divisors (1610395).

66024473 is a wasteful number, since it uses less digits than its factorization.

66024473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610394.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 66024473 is about 8125.5444740645. The cubic root of 66024473 is about 404.1739460245.

The spelling of 66024473 in words is "sixty-six million, twenty-four thousand, four hundred seventy-three".