3866247648 has 72 divisors (see below), whose sum is σ = 11250367128. Its totient is φ = 1258774272.

The previous prime is 3866247613. The next prime is 3866247659. The reversal of 3866247648 is 8467426683.

3866247648 is a `hidden beast` number, since 3 + 8 + 6 + 624 + 7 + 6 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 3866247594 and 3866247603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143715 + ... + 168482.

It is an arithmetic number, because the mean of its divisors is an integer number (156255099).

Almost surely, 2^3866247648 is an apocalyptic number.

It is an amenable number.

3866247648 is an abundant number, since it is smaller than the sum of its proper divisors (7384119480).

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

3866247648 is a wasteful number, since it uses less digits than its factorization.

3866247648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312256 (or 312245 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 3866247648 is about 62179.1576655715. The cubic root of 3866247648 is about 1569.5068769237.

The spelling of 3866247648 in words is "three billion, eight hundred sixty-six million, two hundred forty-seven thousand, six hundred forty-eight".