66652263 has 12 divisors (see below), whose sum is σ = 99381568. Its totient is φ = 43001280.

The previous prime is 66652249. The next prime is 66652273. The reversal of 66652263 is 36225666.

It is not a de Polignac number, because 66652263 - 2⁵ = 66652231 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 (66652273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119170 + ... + 119727.

Almost surely, 2^66652263 is an apocalyptic number.

66652263 is a deficient number, since it is larger than the sum of its proper divisors (32729305).

66652263 is a wasteful number, since it uses less digits than its factorization.

66652263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238934 (or 238931 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 66652263 is about 8164.0837207858. The cubic root of 66652263 is about 405.4509289315.

The spelling of 66652263 in words is "sixty-six million, six hundred fifty-two thousand, two hundred sixty-three".