661246112 has 24 divisors (see below), whose sum is σ = 1305580500. Its totient is φ = 329670144.

The previous prime is 661246031. The next prime is 661246121. The reversal of 661246112 is 211642166.

It can be written as a sum of positive squares in 2 ways, for example, as 644956816 + 16289296 = 25396^2 + 4036^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18437 + ... + 40772.

Almost surely, 2^661246112 is an apocalyptic number.

It is an amenable number.

661246112 is a deficient number, since it is larger than the sum of its proper divisors (644334388).

661246112 is a wasteful number, since it uses less digits than its factorization.

661246112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59568 (or 59560 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 661246112 is about 25714.7061425947. The cubic root of 661246112 is about 871.2063732840.

Adding to 661246112 its reverse (211642166), we get a palindrome (872888278).

The spelling of 661246112 in words is "six hundred sixty-one million, two hundred forty-six thousand, one hundred twelve".