63613801 has 2 divisors, whose sum is σ = 63613802. Its totient is φ = 63613800.

The previous prime is 63613751. The next prime is 63613811. The reversal of 63613801 is 10831636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63282025 + 331776 = 7955^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 63613801 - 2⁹ = 63613289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63613801.

It is not a weakly prime, because it can be changed into another prime (63613811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31806900 + 31806901.

It is an arithmetic number, because the mean of its divisors is an integer number (31806901).

Almost surely, 2^63613801 is an apocalyptic number.

It is an amenable number.

63613801 is a deficient number, since it is larger than the sum of its proper divisors (1).

63613801 is an equidigital number, since it uses as much as digits as its factorization.

63613801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 63613801 is about 7975.8260387248. The cubic root of 63613801 is about 399.1937949251.

The spelling of 63613801 in words is "sixty-three million, six hundred thirteen thousand, eight hundred one".