650985216 has 216 divisors, whose sum is σ = 2108426880. Its totient is φ = 174637056.

The previous prime is 650985193. The next prime is 650985217. The reversal of 650985216 is 612589056.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650985217) 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, 1553455 + ... + 1553873.

Almost surely, 2^650985216 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 650985216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054213440).

650985216 is an abundant number, since it is smaller than the sum of its proper divisors (1457441664).

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

650985216 is a wasteful number, since it uses less digits than its factorization.

650985216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 650985216 is about 25514.4119273794. The cubic root of 650985216 is about 866.6765421623.

The spelling of 650985216 in words is "six hundred fifty million, nine hundred eighty-five thousand, two hundred sixteen".