663034387 has 2 divisors, whose sum is σ = 663034388. Its totient is φ = 663034386.

The previous prime is 663034367. The next prime is 663034447. The reversal of 663034387 is 783430366.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663034387 is a prime.

It is a super-2 number, since 2×663034387² = 879229196688931538, which contains 22 as substring.

It is equal to p_34435669 and since 663034387 and 34435669 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (663034327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331517193 + 331517194.

It is an arithmetic number, because the mean of its divisors is an integer number (331517194).

Almost surely, 2^663034387 is an apocalyptic number.

663034387 is a deficient number, since it is larger than the sum of its proper divisors (1).

663034387 is an equidigital number, since it uses as much as digits as its factorization.

663034387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 663034387 is about 25749.4541107185. The cubic root of 663034387 is about 871.9910303169.

The spelling of 663034387 in words is "six hundred sixty-three million, thirty-four thousand, three hundred eighty-seven".