661246107 has 8 divisors (see below), whose sum is σ = 883767360. Its totient is φ = 439777800.

The previous prime is 661246031. The next prime is 661246121. The reversal of 661246107 is 701642166.

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

It is not a de Polignac number, because 661246107 - 2¹⁰ = 661245083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661246177) 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, 261769 + ... + 264282.

It is an arithmetic number, because the mean of its divisors is an integer number (110470920).

Almost surely, 2^661246107 is an apocalyptic number.

661246107 is a deficient number, since it is larger than the sum of its proper divisors (222521253).

661246107 is a wasteful number, since it uses less digits than its factorization.

661246107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526473.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 661246107 is about 25714.7060453741. The cubic root of 661246107 is about 871.2063710882.

The spelling of 661246107 in words is "six hundred sixty-one million, two hundred forty-six thousand, one hundred seven".