66230671 has 4 divisors (see below), whose sum is σ = 71325352. Its totient is φ = 61135992.

The previous prime is 66230669. The next prime is 66230683. The reversal of 66230671 is 17603266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17603266 = 2 ⋅8801633.

It is a cyclic number.

It is not a de Polignac number, because 66230671 - 2¹ = 66230669 is a prime.

It is a super-2 number, since 2×66230671² = 8773003562220482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66230651) 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, 2547321 + ... + 2547346.

It is an arithmetic number, because the mean of its divisors is an integer number (17831338).

Almost surely, 2^66230671 is an apocalyptic number.

66230671 is a deficient number, since it is larger than the sum of its proper divisors (5094681).

66230671 is a wasteful number, since it uses less digits than its factorization.

66230671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094680.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 66230671 is about 8138.2228403995. Note that the first 3 decimals coincide. The cubic root of 66230671 is about 404.5942611362.

The spelling of 66230671 in words is "sixty-six million, two hundred thirty thousand, six hundred seventy-one".