650644992 has 60 divisors (see below), whose sum is σ = 1877818800. Its totient is φ = 216880128.

The previous prime is 650644991. The next prime is 650644993. The reversal of 650644992 is 299446056.

It is an interprime number because it is at equal distance from previous prime (650644991) and next prime (650644993).

It is a super-2 number, since 2×650644992² = 846677811229360128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650644991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65992 + ... + 75207.

It is an arithmetic number, because the mean of its divisors is an integer number (31296980).

Almost surely, 2^650644992 is an apocalyptic number.

It is an amenable number.

650644992 is an abundant number, since it is smaller than the sum of its proper divisors (1227173808).

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

650644992 is a wasteful number, since it uses less digits than its factorization.

650644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141223 (or 141204 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 650644992 is about 25507.7437653745. The cubic root of 650644992 is about 866.5255323105.

The spelling of 650644992 in words is "six hundred fifty million, six hundred forty-four thousand, nine hundred ninety-two".