63564841 has 2 divisors, whose sum is σ = 63564842. Its totient is φ = 63564840.

The previous prime is 63564829. The next prime is 63564877. The reversal of 63564841 is 14846536.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 5271616 = 7635^2 + 2296^2 .

It is a cyclic number.

It is not a de Polignac number, because 63564841 - 2⁷ = 63564713 is a prime.

It is a super-2 number, since 2×63564841² = 8080978022710562, which contains 22 as substring.

It is equal to p_3760786 and since 63564841 and 3760786 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63564841.

It is not a weakly prime, because it can be changed into another prime (63564811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31782420 + 31782421.

It is an arithmetic number, because the mean of its divisors is an integer number (31782421).

Almost surely, 2^63564841 is an apocalyptic number.

It is an amenable number.

63564841 is a deficient number, since it is larger than the sum of its proper divisors (1).

63564841 is an equidigital number, since it uses as much as digits as its factorization.

63564841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 63564841 is about 7972.7561733694. The cubic root of 63564841 is about 399.0913562292.

The spelling of 63564841 in words is "sixty-three million, five hundred sixty-four thousand, eight hundred forty-one".