66662203 has 16 divisors (see below), whose sum is σ = 72093600. Its totient is φ = 61447680.

The previous prime is 66662191. The next prime is 66662207. The reversal of 66662203 is 30226666.

It is a cyclic number.

It is not a de Polignac number, because 66662203 - 2¹⁷ = 66531131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66662207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130713 + ... + 131221.

It is an arithmetic number, because the mean of its divisors is an integer number (4505850).

Almost surely, 2^66662203 is an apocalyptic number.

66662203 is a deficient number, since it is larger than the sum of its proper divisors (5431397).

66662203 is a wasteful number, since it uses less digits than its factorization.

66662203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 66662203 is about 8164.6924620588. The cubic root of 66662203 is about 405.4710831955.

Adding to 66662203 its reverse (30226666), we get a palindrome (96888869).

The spelling of 66662203 in words is "sixty-six million, six hundred sixty-two thousand, two hundred three".