650968040 has 16 divisors (see below), whose sum is σ = 1464678180. Its totient is φ = 260387200.

The previous prime is 650968009. The next prime is 650968049. The reversal of 650968040 is 40869056.

It can be written as a sum of positive squares in 2 ways, for example, as 650964196 + 3844 = 25514^2 + 62^2 .

It is a junction number, because it is equal to n+sod(n) for n = 650967985 and 650968003.

It is not an unprimeable number, because it can be changed into a prime (650968049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8137061 + ... + 8137140.

Almost surely, 2^650968040 is an apocalyptic number.

It is an amenable number.

650968040 is an abundant number, since it is smaller than the sum of its proper divisors (813710140).

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

650968040 is a wasteful number, since it uses less digits than its factorization.

650968040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274212 (or 16274208 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 650968040 is about 25514.0753310795. The cubic root of 650968040 is about 866.6689197838.

The spelling of 650968040 in words is "six hundred fifty million, nine hundred sixty-eight thousand, forty".