63412621 has 2 divisors, whose sum is σ = 63412622. Its totient is φ = 63412620.

The previous prime is 63412607. The next prime is 63412627. The reversal of 63412621 is 12621436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 16695396 = 6835^2 + 4086^2 .

It is a cyclic number.

It is not a de Polignac number, because 63412621 - 2⁷ = 63412493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63412627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31706310 + 31706311.

It is an arithmetic number, because the mean of its divisors is an integer number (31706311).

Almost surely, 2^63412621 is an apocalyptic number.

It is an amenable number.

63412621 is a deficient number, since it is larger than the sum of its proper divisors (1).

63412621 is an equidigital number, since it uses as much as digits as its factorization.

63412621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 63412621 is about 7963.2041917811. The cubic root of 63412621 is about 398.7725309020.

The spelling of 63412621 in words is "sixty-three million, four hundred twelve thousand, six hundred twenty-one".