661246108 has 12 divisors (see below), whose sum is σ = 1159156152. Its totient is φ = 330058640.

The previous prime is 661246031. The next prime is 661246121. The reversal of 661246108 is 801642166.

661246108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138463 + ... + 143158.

It is an arithmetic number, because the mean of its divisors is an integer number (96596346).

Almost surely, 2^661246108 is an apocalyptic number.

It is an amenable number.

661246108 is a deficient number, since it is larger than the sum of its proper divisors (497910044).

661246108 is a wasteful number, since it uses less digits than its factorization.

661246108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282212 (or 282210 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 661246108 is about 25714.7060648182. The cubic root of 661246108 is about 871.2063715273.

The spelling of 661246108 in words is "six hundred sixty-one million, two hundred forty-six thousand, one hundred eight".