663370139 has 2 divisors, whose sum is σ = 663370140. Its totient is φ = 663370138.

The previous prime is 663370109. The next prime is 663370187. The reversal of 663370139 is 931073366.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663370139 - 2²⁴ = 646592923 is a prime.

It is not a weakly prime, because it can be changed into another prime (663370109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331685069 + 331685070.

It is an arithmetic number, because the mean of its divisors is an integer number (331685070).

Almost surely, 2^663370139 is an apocalyptic number.

663370139 is a deficient number, since it is larger than the sum of its proper divisors (1).

663370139 is an equidigital number, since it uses as much as digits as its factorization.

663370139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 663370139 is about 25755.9728800913. The cubic root of 663370139 is about 872.1381937890.

The spelling of 663370139 in words is "six hundred sixty-three million, three hundred seventy thousand, one hundred thirty-nine".