650803940 has 24 divisors (see below), whose sum is σ = 1367835000. Its totient is φ = 260103168.

The previous prime is 650803921. The next prime is 650803949. The reversal of 650803940 is 49308056.

It can be written as a sum of positive squares in 4 ways, for example, as 129777664 + 521026276 = 11392^2 + 22826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 650803940.

It is not an unprimeable number, because it can be changed into a prime (650803949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11954 + ... + 38006.

It is an arithmetic number, because the mean of its divisors is an integer number (56993125).

Almost surely, 2^650803940 is an apocalyptic number.

It is an amenable number.

650803940 is an abundant number, since it is smaller than the sum of its proper divisors (717031060).

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

650803940 is a wasteful number, since it uses less digits than its factorization.

650803940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311 (or 27309 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 650803940 is about 25510.8592564029. The cubic root of 650803940 is about 866.5960885984.

The spelling of 650803940 in words is "six hundred fifty million, eight hundred three thousand, nine hundred forty".