666230101 has 4 divisors (see below), whose sum is σ = 666699712. Its totient is φ = 665760492.

The previous prime is 666230023. The next prime is 666230129. The reversal of 666230101 is 101032666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 666230101 - 2⁷ = 666229973 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 (666230141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232671 + ... + 235516.

It is an arithmetic number, because the mean of its divisors is an integer number (166674928).

Almost surely, 2^666230101 is an apocalyptic number.

It is an amenable number.

666230101 is a deficient number, since it is larger than the sum of its proper divisors (469611).

666230101 is a wasteful number, since it uses less digits than its factorization.

666230101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469610.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 666230101 is about 25811.4335324484. The cubic root of 666230101 is about 873.3897354783.

Adding to 666230101 its reverse (101032666), we get a palindrome (767262767).

It can be divided in two parts, 6662 and 30101, that added together give a palindrome (36763).

The spelling of 666230101 in words is "six hundred sixty-six million, two hundred thirty thousand, one hundred one".