63990611 has 2 divisors, whose sum is σ = 63990612. Its totient is φ = 63990610.

The previous prime is 63990607. The next prime is 63990643. The reversal of 63990611 is 11609936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63990611 - 2² = 63990607 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63990691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31995305 + 31995306.

It is an arithmetic number, because the mean of its divisors is an integer number (31995306).

Almost surely, 2^63990611 is an apocalyptic number.

63990611 is a deficient number, since it is larger than the sum of its proper divisors (1).

63990611 is an equidigital number, since it uses as much as digits as its factorization.

63990611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 63990611 is about 7999.4131659766. The cubic root of 63990611 is about 399.9804386267.

The spelling of 63990611 in words is "sixty-three million, nine hundred ninety thousand, six hundred eleven".