9961656706 has 8 divisors (see below), whose sum is σ = 14947159824. Its totient is φ = 4979270100.

The previous prime is 9961656697. The next prime is 9961656709. The reversal of 9961656706 is 6076561699.

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

It is not an unprimeable number, because it can be changed into a prime (9961656709) by changing a digit.

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, 771120 + ... + 783931.

It is an arithmetic number, because the mean of its divisors is an integer number (1868394978).

Almost surely, 2^9961656706 is an apocalyptic number.

9961656706 is a deficient number, since it is larger than the sum of its proper divisors (4985503118).

9961656706 is a wasteful number, since it uses less digits than its factorization.

9961656706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558256.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 9961656706 is about 99808.0994008001. The cubic root of 9961656706 is about 2151.6775590165.

The spelling of 9961656706 in words is "nine billion, nine hundred sixty-one million, six hundred fifty-six thousand, seven hundred six".