650312040 has 64 divisors (see below), whose sum is σ = 2229644160. Its totient is φ = 148642560.

The previous prime is 650312021. The next prime is 650312071. The reversal of 650312040 is 40213056.

It is a happy number.

650312040 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 650311998 and 650312016.

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, 386251 + ... + 387930.

It is an arithmetic number, because the mean of its divisors is an integer number (34838190).

Almost surely, 2^650312040 is an apocalyptic number.

650312040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

650312040 is an abundant number, since it is smaller than the sum of its proper divisors (1579332120).

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

650312040 is a wasteful number, since it uses less digits than its factorization.

650312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774202 (or 774198 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 650312040 is about 25501.2164415739. The cubic root of 650312040 is about 866.3776991913.

Adding to 650312040 its reverse (40213056), we get a palindrome (690525096).

The spelling of 650312040 in words is "six hundred fifty million, three hundred twelve thousand, forty".