608639840 has 24 divisors (see below), whose sum is σ = 1437912000. Its totient is φ = 243455872.

The previous prime is 608639807. The next prime is 608639897. The reversal of 608639840 is 48936806.

It is a junction number, because it is equal to n+sod(n) for n = 608639791 and 608639800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901840 + ... + 1902159.

It is an arithmetic number, because the mean of its divisors is an integer number (59913000).

Almost surely, 2^608639840 is an apocalyptic number.

It is an amenable number.

608639840 is an abundant number, since it is smaller than the sum of its proper divisors (829272160).

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

608639840 is a wasteful number, since it uses less digits than its factorization.

608639840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804014 (or 3804006 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 608639840 is about 24670.6270694525. The cubic root of 608639840 is about 847.4617891307.

The spelling of 608639840 in words is "six hundred eight million, six hundred thirty-nine thousand, eight hundred forty".