1370681 has 4 divisors (see below), whose sum is σ = 1476132. Its totient is φ = 1265232.

The previous prime is 1370669. The next prime is 1370683. The reversal of 1370681 is 1860731.

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 116281 + 1254400 = 341^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370681 - 2⁶ = 1370617 is a prime.

It is a super-2 number, since 2×1370681² = 3757532807522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1370681.

It is not an unprimeable number, because it can be changed into a prime (1370683) 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 3 ways as a sum of consecutive naturals, for example, 52706 + ... + 52731.

It is an arithmetic number, because the mean of its divisors is an integer number (369033).

2^1370681 is an apocalyptic number.

It is an amenable number.

1370681 is a deficient number, since it is larger than the sum of its proper divisors (105451).

1370681 is a wasteful number, since it uses less digits than its factorization.

1370681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105450.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1370681 is about 1170.7608637121. The cubic root of 1370681 is about 111.0824536835.

The spelling of 1370681 in words is "one million, three hundred seventy thousand, six hundred eighty-one".