6631959706 has 4 divisors (see below), whose sum is σ = 9947939562. Its totient is φ = 3315979852.

The previous prime is 6631959643. The next prime is 6631959739. The reversal of 6631959706 is 6079591366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4445555625 + 2186404081 = 66675^2 + 46759^2 .

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 as a sum of consecutive naturals, namely, 1657989925 + ... + 1657989928.

Almost surely, 2^6631959706 is an apocalyptic number.

6631959706 is a deficient number, since it is larger than the sum of its proper divisors (3315979856).

6631959706 is a wasteful number, since it uses less digits than its factorization.

6631959706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315979855.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 6631959706 is about 81436.8448922231. The cubic root of 6631959706 is about 1878.8003235349.

It can be divided in two parts, 66319 and 59706, that added together give a square (126025 = 355²).

The spelling of 6631959706 in words is "six billion, six hundred thirty-one million, nine hundred fifty-nine thousand, seven hundred six".