830504621 has 4 divisors (see below), whose sum is σ = 879357852. Its totient is φ = 781651392.

The previous prime is 830504603. The next prime is 830504629. The reversal of 830504621 is 126405038.

830504621 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, and also an emirpimes, since its reverse is a distinct semiprime: 126405038 = 2 ⋅63202519.

It can be written as a sum of positive squares in 2 ways, for example, as 282710596 + 547794025 = 16814^2 + 23405^2 .

It is a cyclic number.

It is not a de Polignac number, because 830504621 - 2¹⁴ = 830488237 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 (830504629) 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, 24426590 + ... + 24426623.

It is an arithmetic number, because the mean of its divisors is an integer number (219839463).

Almost surely, 2^830504621 is an apocalyptic number.

It is an amenable number.

830504621 is a deficient number, since it is larger than the sum of its proper divisors (48853231).

830504621 is a wasteful number, since it uses less digits than its factorization.

830504621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48853230.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 830504621 is about 28818.4770763481. The cubic root of 830504621 is about 939.9700537465.

Adding to 830504621 its reverse (126405038), we get a palindrome (956909659).

The spelling of 830504621 in words is "eight hundred thirty million, five hundred four thousand, six hundred twenty-one".