808673640 has 64 divisors (see below), whose sum is σ = 2431935360. Its totient is φ = 215120640.

The previous prime is 808673639. The next prime is 808673641. The reversal of 808673640 is 46376808.

It is an interprime number because it is at equal distance from previous prime (808673639) and next prime (808673641).

It is a junction number, because it is equal to n+sod(n) for n = 808673592 and 808673601.

It is not an unprimeable number, because it can be changed into a prime (808673641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42517 + ... + 58523.

It is an arithmetic number, because the mean of its divisors is an integer number (37998990).

Almost surely, 2^808673640 is an apocalyptic number.

It is an amenable number.

808673640 is an abundant number, since it is smaller than the sum of its proper divisors (1623261720).

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

808673640 is a wasteful number, since it uses less digits than its factorization.

808673640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16442 (or 16438 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 808673640 is about 28437.1876246580. The cubic root of 808673640 is about 931.6606702457.

The spelling of 808673640 in words is "eight hundred eight million, six hundred seventy-three thousand, six hundred forty".