8661237608 has 8 divisors (see below), whose sum is σ = 16239820530. Its totient is φ = 4330618800.

The previous prime is 8661237589. The next prime is 8661237617. The reversal of 8661237608 is 8067321668.

It can be written as a sum of positive squares in only one way, i.e., 7683924964 + 977312644 = 87658^2 + 31262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541327343 + ... + 541327358.

Almost surely, 2^8661237608 is an apocalyptic number.

It is an amenable number.

8661237608 is a deficient number, since it is larger than the sum of its proper divisors (7578582922).

8661237608 is a wasteful number, since it uses less digits than its factorization.

8661237608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082654707 (or 1082654703 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 8661237608 is about 93065.7703347477. The cubic root of 8661237608 is about 2053.6510473076.

The spelling of 8661237608 in words is "eight billion, six hundred sixty-one million, two hundred thirty-seven thousand, six hundred eight".