663820147 has 2 divisors, whose sum is σ = 663820148. Its totient is φ = 663820146.

The previous prime is 663820123. The next prime is 663820187. The reversal of 663820147 is 741028366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663820147 - 2¹⁵ = 663787379 is a prime.

It is equal to p_34474393 and since 663820147 and 34474393 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 (663820187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331910073 + 331910074.

It is an arithmetic number, because the mean of its divisors is an integer number (331910074).

Almost surely, 2^663820147 is an apocalyptic number.

663820147 is a deficient number, since it is larger than the sum of its proper divisors (1).

663820147 is an equidigital number, since it uses as much as digits as its factorization.

663820147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 663820147 is about 25764.7073920897. The cubic root of 663820147 is about 872.3353589556.

The spelling of 663820147 in words is "six hundred sixty-three million, eight hundred twenty thousand, one hundred forty-seven".