1365636668 has 24 divisors (see below), whose sum is σ = 2616047280. Its totient is φ = 618619520.

The previous prime is 1365636659. The next prime is 1365636689. The reversal of 1365636668 is 8666365631.

It is a super-2 number, since 2×1365636668² = 3729927017972284448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40073 + ... + 65856.

It is an arithmetic number, because the mean of its divisors is an integer number (109001970).

Almost surely, 2^1365636668 is an apocalyptic number.

It is an amenable number.

1365636668 is a deficient number, since it is larger than the sum of its proper divisors (1250410612).

1365636668 is a wasteful number, since it uses less digits than its factorization.

1365636668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106237 (or 106235 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 50.

The square root of 1365636668 is about 36954.5216177939. The cubic root of 1365636668 is about 1109.4601893272.

The spelling of 1365636668 in words is "one billion, three hundred sixty-five million, six hundred thirty-six thousand, six hundred sixty-eight".