650932649 has 4 divisors (see below), whose sum is σ = 651634260. Its totient is φ = 650231040.

The previous prime is 650932643. The next prime is 650932651. The reversal of 650932649 is 946239056.

650932649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47886400 + 603046249 = 6920^2 + 24557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650932649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650932643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349412 + ... + 351269.

It is an arithmetic number, because the mean of its divisors is an integer number (162908565).

Almost surely, 2^650932649 is an apocalyptic number.

It is an amenable number.

650932649 is a deficient number, since it is larger than the sum of its proper divisors (701611).

650932649 is an equidigital number, since it uses as much as digits as its factorization.

650932649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701610.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 650932649 is about 25513.3817633022. The cubic root of 650932649 is about 866.6532135157.

The spelling of 650932649 in words is "six hundred fifty million, nine hundred thirty-two thousand, six hundred forty-nine".