663356005 has 16 divisors (see below), whose sum is σ = 886823280. Its totient is φ = 472969728.

The previous prime is 663355919. The next prime is 663356021. The reversal of 663356005 is 500653366.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 104080804 + 559275201 = 10202^2 + 23649^2 .

It is a cyclic number.

It is not a de Polignac number, because 663356005 - 2¹⁵ = 663323237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174072 + ... + 177841.

It is an arithmetic number, because the mean of its divisors is an integer number (55426455).

Almost surely, 2^663356005 is an apocalyptic number.

663356005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

663356005 is a deficient number, since it is larger than the sum of its proper divisors (223467275).

663356005 is a wasteful number, since it uses less digits than its factorization.

663356005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351960.

The product of its (nonzero) digits is 48600, while the sum is 34.

The square root of 663356005 is about 25755.6984956728. The cubic root of 663356005 is about 872.1319997162.

The spelling of 663356005 in words is "six hundred sixty-three million, three hundred fifty-six thousand, five".