1365945 has 16 divisors (see below), whose sum is σ = 2497920. Its totient is φ = 624384.

The previous prime is 1365919. The next prime is 1365977. The reversal of 1365945 is 5495631.

It is a happy number.

It is not a de Polignac number, because 1365945 - 2⁵ = 1365913 is a prime.

1365945 is a lucky number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6400 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (156120).

2^1365945 is an apocalyptic number.

1365945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1365945 is a deficient number, since it is larger than the sum of its proper divisors (1131975).

1365945 is a wasteful number, since it uses less digits than its factorization.

1365945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024.

The product of its digits is 16200, while the sum is 33.

The square root of 1365945 is about 1168.7364972482. The cubic root of 1365945 is about 110.9543680626.

The spelling of 1365945 in words is "one million, three hundred sixty-five thousand, nine hundred forty-five".