8661408070 has 48 divisors (see below), whose sum is σ = 18626127120. Its totient is φ = 2889359424.

The previous prime is 8661408059. The next prime is 8661408127. The reversal of 8661408070 is 708041668.

It is a super-2 number, since 2×8661408070² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220740 + ... + 256999.

It is an arithmetic number, because the mean of its divisors is an integer number (388044315).

Almost surely, 2^8661408070 is an apocalyptic number.

8661408070 is an abundant number, since it is smaller than the sum of its proper divisors (9964719050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8661408070 is a wasteful number, since it uses less digits than its factorization.

8661408070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477797 (or 477790 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 8661408070 is about 93066.6861449359. The cubic root of 8661408070 is about 2053.6645198691.

The spelling of 8661408070 in words is "eight billion, six hundred sixty-one million, four hundred eight thousand, seventy".