650523987 has 16 divisors (see below), whose sum is σ = 966850560. Its totient is φ = 432282600.

The previous prime is 650523983. The next prime is 650523997. The reversal of 650523987 is 789325056.

It is a happy number.

650523987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 650523987 - 2² = 650523983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650523983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30339 + ... + 47132.

It is an arithmetic number, because the mean of its divisors is an integer number (60428160).

Almost surely, 2^650523987 is an apocalyptic number.

650523987 is a deficient number, since it is larger than the sum of its proper divisors (316326573).

650523987 is a wasteful number, since it uses less digits than its factorization.

650523987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77791 (or 77785 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 650523987 is about 25505.3717283242. The cubic root of 650523987 is about 866.4718110420.

The spelling of 650523987 in words is "six hundred fifty million, five hundred twenty-three thousand, nine hundred eighty-seven".