463687621 has 2 divisors, whose sum is σ = 463687622. Its totient is φ = 463687620.

The previous prime is 463687591. The next prime is 463687633. The reversal of 463687621 is 126786364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424936996 + 38750625 = 20614^2 + 6225^2 .

It is a cyclic number.

It is not a de Polignac number, because 463687621 - 2¹⁷ = 463556549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (463687661) 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 as a sum of consecutive naturals, namely, 231843810 + 231843811.

It is an arithmetic number, because the mean of its divisors is an integer number (231843811).

Almost surely, 2^463687621 is an apocalyptic number.

It is an amenable number.

463687621 is a deficient number, since it is larger than the sum of its proper divisors (1).

463687621 is an equidigital number, since it uses as much as digits as its factorization.

463687621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 463687621 is about 21533.4070922369. The cubic root of 463687621 is about 774.0015562824.

The spelling of 463687621 in words is "four hundred sixty-three million, six hundred eighty-seven thousand, six hundred twenty-one".