663477707 has 2 divisors, whose sum is σ = 663477708. Its totient is φ = 663477706.

The previous prime is 663477677. The next prime is 663477721. The reversal of 663477707 is 707774366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663477707 - 2¹⁰ = 663476683 is a prime.

It is not a weakly prime, because it can be changed into another prime (663477307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331738853 + 331738854.

It is an arithmetic number, because the mean of its divisors is an integer number (331738854).

Almost surely, 2^663477707 is an apocalyptic number.

663477707 is a deficient number, since it is larger than the sum of its proper divisors (1).

663477707 is an equidigital number, since it uses as much as digits as its factorization.

663477707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1037232, while the sum is 47.

The square root of 663477707 is about 25758.0610100993. The cubic root of 663477707 is about 872.1853314202.

The spelling of 663477707 in words is "six hundred sixty-three million, four hundred seventy-seven thousand, seven hundred seven".