1378797 has 8 divisors (see below), whose sum is σ = 2101056. Its totient is φ = 787872.

The previous prime is 1378777. The next prime is 1378799. The reversal of 1378797 is 7978731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1378797 - 2⁶ = 1378733 is a prime.

1378797 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378799) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32808 + ... + 32849.

It is an arithmetic number, because the mean of its divisors is an integer number (262632).

2^1378797 is an apocalyptic number.

It is an amenable number.

1378797 is a deficient number, since it is larger than the sum of its proper divisors (722259).

1378797 is an equidigital number, since it uses as much as digits as its factorization.

1378797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65667.

The product of its digits is 74088, while the sum is 42.

The square root of 1378797 is about 1174.2218700058. The cubic root of 1378797 is about 111.3012674535.

The spelling of 1378797 in words is "one million, three hundred seventy-eight thousand, seven hundred ninety-seven".