650234621 has 4 divisors (see below), whose sum is σ = 666094044. Its totient is φ = 634375200.

The previous prime is 650234609. The next prime is 650234677. The reversal of 650234621 is 126432056.

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 207763396 + 442471225 = 14414^2 + 21035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650234621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650234821) 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 3 ways as a sum of consecutive naturals, for example, 7929650 + ... + 7929731.

It is an arithmetic number, because the mean of its divisors is an integer number (166523511).

Almost surely, 2^650234621 is an apocalyptic number.

It is an amenable number.

650234621 is a deficient number, since it is larger than the sum of its proper divisors (15859423).

650234621 is a wasteful number, since it uses less digits than its factorization.

650234621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15859422.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 650234621 is about 25499.6984491974. The cubic root of 650234621 is about 866.3433173598.

Adding to 650234621 its reverse (126432056), we get a palindrome (776666677).

The spelling of 650234621 in words is "six hundred fifty million, two hundred thirty-four thousand, six hundred twenty-one".