650615812 has 96 divisors (see below), whose sum is σ = 1532805120. Its totient is φ = 234030720.

The previous prime is 650615809. The next prime is 650615821. The reversal of 650615812 is 218516056.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203853 + ... + 207019.

It is an arithmetic number, because the mean of its divisors is an integer number (15966720).

Almost surely, 2^650615812 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 650615812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (766402560).

650615812 is an abundant number, since it is smaller than the sum of its proper divisors (882189308).

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

650615812 is a wasteful number, since it uses less digits than its factorization.

650615812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 650615812 is about 25507.1717757967. The cubic root of 650615812 is about 866.5125781940.

The spelling of 650615812 in words is "six hundred fifty million, six hundred fifteen thousand, eight hundred twelve".