5640650136 has 384 divisors, whose sum is σ = 18249154560. Its totient is φ = 1616630400.

The previous prime is 5640650089. The next prime is 5640650159. The reversal of 5640650136 is 6310560465.

5640650136 is a `hidden beast` number, since 5 + 640 + 6 + 5 + 0 + 1 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5640650136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44414505 + ... + 44414631.

It is an arithmetic number, because the mean of its divisors is an integer number (47523840).

Almost surely, 2^5640650136 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 5640650136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9124577280).

5640650136 is an abundant number, since it is smaller than the sum of its proper divisors (12608504424).

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

5640650136 is a wasteful number, since it uses less digits than its factorization.

5640650136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 5640650136 is about 75104.2617698889. The cubic root of 5640650136 is about 1780.0944838960.

The spelling of 5640650136 in words is "five billion, six hundred forty million, six hundred fifty thousand, one hundred thirty-six".