3647398860 has 144 divisors (see below), whose sum is σ = 12769952832. Its totient is φ = 825408000.

The previous prime is 3647398849. The next prime is 3647398861. The reversal of 3647398860 is 688937463.

3647398860 is a `hidden beast` number, since 3 + 6 + 473 + 98 + 86 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3647398797 and 3647398806.

It is not an unprimeable number, because it can be changed into a prime (3647398861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112930 + ... + 141590.

It is an arithmetic number, because the mean of its divisors is an integer number (88680228).

Almost surely, 2^3647398860 is an apocalyptic number.

3647398860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3647398860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6384976416).

3647398860 is an abundant number, since it is smaller than the sum of its proper divisors (9122553972).

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

3647398860 is a wasteful number, since it uses less digits than its factorization.

3647398860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28784 (or 28779 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 3647398860 is about 60393.6988435052. The cubic root of 3647398860 is about 1539.3158905568.

The spelling of 3647398860 in words is "three billion, six hundred forty-seven million, three hundred ninety-eight thousand, eight hundred sixty".