63728011 has 2 divisors, whose sum is σ = 63728012. Its totient is φ = 63728010.

The previous prime is 63727999. The next prime is 63728029. The reversal of 63728011 is 11082736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63728011 - 2¹³ = 63719819 is a prime.

It is a super-2 number, since 2×63728011² = 8122518772032242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63728081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31864005 + 31864006.

It is an arithmetic number, because the mean of its divisors is an integer number (31864006).

Almost surely, 2^63728011 is an apocalyptic number.

63728011 is a deficient number, since it is larger than the sum of its proper divisors (1).

63728011 is an equidigital number, since it uses as much as digits as its factorization.

63728011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 63728011 is about 7982.9825879805. The cubic root of 63728011 is about 399.4325516365.

The spelling of 63728011 in words is "sixty-three million, seven hundred twenty-eight thousand, eleven".