661103230 has 16 divisors (see below), whose sum is σ = 1191314160. Its totient is φ = 264146112.

The previous prime is 661103213. The next prime is 661103231. The reversal of 661103230 is 32301166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661103231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27375 + ... + 45514.

It is an arithmetic number, because the mean of its divisors is an integer number (74457135).

Almost surely, 2^661103230 is an apocalyptic number.

661103230 is a deficient number, since it is larger than the sum of its proper divisors (530210930).

661103230 is a wasteful number, since it uses less digits than its factorization.

661103230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73803.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 661103230 is about 25711.9277768121. The cubic root of 661103230 is about 871.1436186991.

Adding to 661103230 its reverse (32301166), we get a palindrome (693404396).

The spelling of 661103230 in words is "six hundred sixty-one million, one hundred three thousand, two hundred thirty".