361663636 has 12 divisors (see below), whose sum is σ = 633688020. Its totient is φ = 180609920.

The previous prime is 361663633. The next prime is 361663649. The reversal of 361663636 is 636366163.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110124036 + 251539600 = 10494^2 + 15860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361663633) 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 in 3 ways as a sum of consecutive naturals, for example, 51781 + ... + 58348.

It is an arithmetic number, because the mean of its divisors is an integer number (52807335).

Almost surely, 2^361663636 is an apocalyptic number.

It is an amenable number.

361663636 is a deficient number, since it is larger than the sum of its proper divisors (272024384).

361663636 is a wasteful number, since it uses less digits than its factorization.

361663636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110954 (or 110952 counting only the distinct ones).

The product of its digits is 209952, while the sum is 40.

The square root of 361663636 is about 19017.4560864486. The cubic root of 361663636 is about 712.4727875521.

The spelling of 361663636 in words is "three hundred sixty-one million, six hundred sixty-three thousand, six hundred thirty-six".