650612664 has 48 divisors (see below), whose sum is σ = 1897623000. Its totient is φ = 200188224.

The previous prime is 650612663. The next prime is 650612741. The reversal of 650612664 is 466216056.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650612663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346614 + ... + 348485.

Almost surely, 2^650612664 is an apocalyptic number.

It is an amenable number.

650612664 is an abundant number, since it is smaller than the sum of its proper divisors (1247010336).

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

650612664 is a wasteful number, since it uses less digits than its factorization.

650612664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695124 (or 695117 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 650612664 is about 25507.1100675870. The cubic root of 650612664 is about 866.5111806534.

Subtracting from 650612664 its sum of digits (36), we obtain a triangular number (650612628 = T₃₆₀₇₂).

The spelling of 650612664 in words is "six hundred fifty million, six hundred twelve thousand, six hundred sixty-four".