8663404464 has 640 divisors, whose sum is σ = 31514649600. Its totient is φ = 2258150400.

The previous prime is 8663404397. The next prime is 8663404471. The reversal of 8663404464 is 4644043668.

8663404464 is a `hidden beast` number, since 8 + 6 + 634 + 0 + 4 + 4 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 142022994 + ... + 142023054.

It is an arithmetic number, because the mean of its divisors is an integer number (49241640).

Almost surely, 2^8663404464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8663404464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15757324800).

8663404464 is an abundant number, since it is smaller than the sum of its proper divisors (22851245136).

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

8663404464 is a wasteful number, since it uses less digits than its factorization.

8663404464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The square root of 8663404464 is about 93077.4111371819. The cubic root of 8663404464 is about 2053.8222928521.

The spelling of 8663404464 in words is "eight billion, six hundred sixty-three million, four hundred four thousand, four hundred sixty-four".