1370881 has 4 divisors (see below), whose sum is σ = 1373764. Its totient is φ = 1368000.

The previous prime is 1370861. The next prime is 1370891. The reversal of 1370881 is 1880731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1880731 = 499 ⋅3769.

It can be written as a sum of positive squares in 2 ways, for example, as 1000000 + 370881 = 1000^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370881 - 2¹³ = 1362689 is a prime.

It is a super-2 number, since 2×1370881² = 3758629432322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1370821) 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, 540 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (343441).

2^1370881 is an apocalyptic number.

It is an amenable number.

1370881 is a deficient number, since it is larger than the sum of its proper divisors (2883).

1370881 is an equidigital number, since it uses as much as digits as its factorization.

1370881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1370881 is about 1170.8462751361. The cubic root of 1370881 is about 111.0878562073.

The spelling of 1370881 in words is "one million, three hundred seventy thousand, eight hundred eighty-one".