63624689 has 2 divisors, whose sum is σ = 63624690. Its totient is φ = 63624688.

The previous prime is 63624677. The next prime is 63624703. The reversal of 63624689 is 98642636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36240400 + 27384289 = 6020^2 + 5233^2 .

It is a cyclic number.

It is not a de Polignac number, because 63624689 - 2¹² = 63620593 is a prime.

It is not a weakly prime, because it can be changed into another prime (63624619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31812344 + 31812345.

It is an arithmetic number, because the mean of its divisors is an integer number (31812345).

Almost surely, 2^63624689 is an apocalyptic number.

It is an amenable number.

63624689 is a deficient number, since it is larger than the sum of its proper divisors (1).

63624689 is an equidigital number, since it uses as much as digits as its factorization.

63624689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 63624689 is about 7976.5085720508. The cubic root of 63624689 is about 399.2165686735.

The spelling of 63624689 in words is "sixty-three million, six hundred twenty-four thousand, six hundred eighty-nine".