8745654640 has 40 divisors (see below), whose sum is σ = 20534989248. Its totient is φ = 3463622400.

The previous prime is 8745654581. The next prime is 8745654667. The reversal of 8745654640 is 464565478.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 533112 + ... + 549271.

Almost surely, 2^8745654640 is an apocalyptic number.

8745654640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8745654640 is an abundant number, since it is smaller than the sum of its proper divisors (11789334608).

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

8745654640 is a wasteful number, since it uses less digits than its factorization.

8745654640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082497 (or 1082491 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 49.

The square root of 8745654640 is about 93518.2048587333. The cubic root of 8745654640 is about 2060.3014797399.

The spelling of 8745654640 in words is "eight billion, seven hundred forty-five million, six hundred fifty-four thousand, six hundred forty".