661113202 has 8 divisors (see below), whose sum is σ = 1010380716. Its totient is φ = 324319632.

The previous prime is 661113199. The next prime is 661113217. The reversal of 661113202 is 202311166.

It can be written as a sum of positive squares in 2 ways, for example, as 641051761 + 20061441 = 25319^2 + 4479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3118353 + ... + 3118564.

Almost surely, 2^661113202 is an apocalyptic number.

661113202 is a deficient number, since it is larger than the sum of its proper divisors (349267514).

661113202 is a wasteful number, since it uses less digits than its factorization.

661113202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236972.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 661113202 is about 25712.1216938626. The cubic root of 661113202 is about 871.1479987515.

Adding to 661113202 its reverse (202311166), we get a palindrome (863424368).

The spelling of 661113202 in words is "six hundred sixty-one million, one hundred thirteen thousand, two hundred two".