1379565 has 32 divisors (see below), whose sum is σ = 2678400. Its totient is φ = 668160.

The previous prime is 1379549. The next prime is 1379579. The reversal of 1379565 is 5659731.

It is a happy number.

It is not a de Polignac number, because 1379565 - 2⁴ = 1379549 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

1379565 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1021 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2^1379565 is an apocalyptic number.

1379565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1379565 is a deficient number, since it is larger than the sum of its proper divisors (1298835).

1379565 is a wasteful number, since it uses less digits than its factorization.

1379565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 948 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 1379565 is about 1174.5488495588. The cubic root of 1379565 is about 111.3219288241.

The spelling of 1379565 in words is "one million, three hundred seventy-nine thousand, five hundred sixty-five".