8349640704 has 120 divisors (see below), whose sum is σ = 24940245330. Its totient is φ = 2783158272.

The previous prime is 8349640699. The next prime is 8349640807. The reversal of 8349640704 is 4070469438.

It can be written as a sum of positive squares in only one way, i.e., 6091490304 + 2258150400 = 78048^2 + 47520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8349640704.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 140722 + ... + 191054.

Almost surely, 2^8349640704 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 8349640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12470122665).

8349640704 is an abundant number, since it is smaller than the sum of its proper divisors (16590604626).

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

8349640704 is an equidigital number, since it uses as much as digits as its factorization.

8349640704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50367 (or 50338 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 8349640704 is about 91376.3684110941. The cubic root of 8349640704 is about 2028.7222664575.

The spelling of 8349640704 in words is "eight billion, three hundred forty-nine million, six hundred forty thousand, seven hundred four".