1378065 has 32 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 656640.

The previous prime is 1378061. The next prime is 1378067. The reversal of 1378065 is 5608731.

It is not a de Polignac number, because 1378065 - 2² = 1378061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1378061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7120 + ... + 7310.

It is an arithmetic number, because the mean of its divisors is an integer number (76608).

2^1378065 is an apocalyptic number.

1378065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378065 is a deficient number, since it is larger than the sum of its proper divisors (1073391).

1378065 is a wasteful number, since it uses less digits than its factorization.

1378065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1378065 is about 1173.9101328466. The cubic root of 1378065 is about 111.2815674421.

The spelling of 1378065 in words is "one million, three hundred seventy-eight thousand, sixty-five".