8693871640 has 32 divisors (see below), whose sum is σ = 19669300560. Its totient is φ = 3458332800.

The previous prime is 8693871619. The next prime is 8693871649. The reversal of 8693871640 is 461783968.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8693871649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593166 + ... + 607645.

Almost surely, 2^8693871640 is an apocalyptic number.

It is an amenable number.

8693871640 is an abundant number, since it is smaller than the sum of its proper divisors (10975428920).

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

8693871640 is a wasteful number, since it uses less digits than its factorization.

8693871640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201003 (or 1200999 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 8693871640 is about 93240.9332857624. The cubic root of 8693871640 is about 2056.2270809307.

The spelling of 8693871640 in words is "eight billion, six hundred ninety-three million, eight hundred seventy-one thousand, six hundred forty".