650216556 has 144 divisors (see below), whose sum is σ = 1910563200. Its totient is φ = 184377600.

The previous prime is 650216549. The next prime is 650216587. The reversal of 650216556 is 655612056.

It is a happy number.

It is a super-2 number, since 2×650216556² = 845563139393002272, which contains 22 as substring.

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 650216556.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669151 + ... + 670121.

It is an arithmetic number, because the mean of its divisors is an integer number (13267800).

Almost surely, 2^650216556 is an apocalyptic number.

650216556 is a gapful number since it is divisible by the number (66) 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 650216556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955281600).

650216556 is an abundant number, since it is smaller than the sum of its proper divisors (1260346644).

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

650216556 is a wasteful number, since it uses less digits than its factorization.

650216556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 650216556 is about 25499.3442268620. The cubic root of 650216556 is about 866.3352942881.

The spelling of 650216556 in words is "six hundred fifty million, two hundred sixteen thousand, five hundred fifty-six".