650061140 has 48 divisors (see below), whose sum is σ = 1425106704. Its totient is φ = 248832000.

The previous prime is 650061133. The next prime is 650061157. The reversal of 650061140 is 41160056.

650061140 = 1793² + 1794² + ... + 1975².

It can be written as a sum of positive squares in 8 ways, for example, as 36409156 + 613651984 = 6034^2 + 24772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37940 + ... + 52340.

It is an arithmetic number, because the mean of its divisors is an integer number (29689723).

Almost surely, 2^650061140 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 650061140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712553352).

650061140 is an abundant number, since it is smaller than the sum of its proper divisors (775045564).

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

650061140 is a wasteful number, since it uses less digits than its factorization.

650061140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508 (or 14506 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 650061140 is about 25496.2965938193. The cubic root of 650061140 is about 866.2662644170.

The spelling of 650061140 in words is "six hundred fifty million, sixty-one thousand, one hundred forty".