1365550065 has 48 divisors (see below), whose sum is σ = 2586317760. Its totient is φ = 661011840.

The previous prime is 1365550061. The next prime is 1365550073. The reversal of 1365550065 is 5600555631.

It is not a de Polignac number, because 1365550065 - 2² = 1365550061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1365550061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 363939 + ... + 367671.

It is an arithmetic number, because the mean of its divisors is an integer number (53881620).

Almost surely, 2^1365550065 is an apocalyptic number.

1365550065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1365550065 is a deficient number, since it is larger than the sum of its proper divisors (1220767695).

1365550065 is a wasteful number, since it uses less digits than its factorization.

1365550065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494 (or 4491 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 1365550065 is about 36953.3498481531. The cubic root of 1365550065 is about 1109.4367363805.

The spelling of 1365550065 in words is "one billion, three hundred sixty-five million, five hundred fifty thousand, sixty-five".