650421623 has 8 divisors (see below), whose sum is σ = 714422400. Its totient is φ = 589397688.

The previous prime is 650421593. The next prime is 650421643. The reversal of 650421623 is 326124056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 650421623 - 2¹⁶ = 650356087 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 (650421643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743753 + ... + 744626.

It is an arithmetic number, because the mean of its divisors is an integer number (89302800).

Almost surely, 2^650421623 is an apocalyptic number.

650421623 is a deficient number, since it is larger than the sum of its proper divisors (64000777).

650421623 is a wasteful number, since it uses less digits than its factorization.

650421623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488421.

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

The square root of 650421623 is about 25503.3649348473. The cubic root of 650421623 is about 866.4263604130.

Adding to 650421623 its reverse (326124056), we get a palindrome (976545679).

The spelling of 650421623 in words is "six hundred fifty million, four hundred twenty-one thousand, six hundred twenty-three".