830432621 has 2 divisors, whose sum is σ = 830432622. Its totient is φ = 830432620.

The previous prime is 830432591. The next prime is 830432657. The reversal of 830432621 is 126234038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503329225 + 327103396 = 22435^2 + 18086^2 .

It is a cyclic number.

It is not a de Polignac number, because 830432621 - 2²² = 826238317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830432821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415216310 + 415216311.

It is an arithmetic number, because the mean of its divisors is an integer number (415216311).

Almost surely, 2^830432621 is an apocalyptic number.

It is an amenable number.

830432621 is a deficient number, since it is larger than the sum of its proper divisors (1).

830432621 is an equidigital number, since it uses as much as digits as its factorization.

830432621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 830432621 is about 28817.2278507146. The cubic root of 830432621 is about 939.9428896192.

Adding to 830432621 its reverse (126234038), we get a palindrome (956666659).

The spelling of 830432621 in words is "eight hundred thirty million, four hundred thirty-two thousand, six hundred twenty-one".