650136508 has 72 divisors (see below), whose sum is σ = 1435825440. Its totient is φ = 255790080.

The previous prime is 650136503. The next prime is 650136523. The reversal of 650136508 is 805631056.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650136503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134233 + ... + 138991.

It is an arithmetic number, because the mean of its divisors is an integer number (19942020).

Almost surely, 2^650136508 is an apocalyptic number.

650136508 is a gapful number since it is divisible by the number (68) 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 650136508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717912720).

650136508 is an abundant number, since it is smaller than the sum of its proper divisors (785688932).

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

650136508 is a wasteful number, since it uses less digits than its factorization.

650136508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835 (or 4826 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 650136508 is about 25497.7745695580. The cubic root of 650136508 is about 866.2997413875.

The spelling of 650136508 in words is "six hundred fifty million, one hundred thirty-six thousand, five hundred eight".