1373885 has 4 divisors (see below), whose sum is σ = 1648668. Its totient is φ = 1099104.

The previous prime is 1373881. The next prime is 1373887. The reversal of 1373885 is 5883731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337561 + 1036324 = 581^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373885 - 2² = 1373881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137384 + ... + 137393.

It is an arithmetic number, because the mean of its divisors is an integer number (412167).

2^1373885 is an apocalyptic number.

It is an amenable number.

1373885 is a deficient number, since it is larger than the sum of its proper divisors (274783).

1373885 is an equidigital number, since it uses as much as digits as its factorization.

1373885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274782.

The product of its digits is 20160, while the sum is 35.

The square root of 1373885 is about 1172.1284059351. The cubic root of 1373885 is about 111.1689389723.

The spelling of 1373885 in words is "one million, three hundred seventy-three thousand, eight hundred eighty-five".