1376681 has 4 divisors (see below), whose sum is σ = 1379664. Its totient is φ = 1373700.

The previous prime is 1376653. The next prime is 1376693. The reversal of 1376681 is 1866731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376681 is a prime.

It is a super-2 number, since 2×1376681² = 3790501151522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1376621) 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, 635 + ... + 1776.

It is an arithmetic number, because the mean of its divisors is an integer number (344916).

2^1376681 is an apocalyptic number.

It is an amenable number.

1376681 is a deficient number, since it is larger than the sum of its proper divisors (2983).

1376681 is an equidigital number, since it uses as much as digits as its factorization.

1376681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its digits is 6048, while the sum is 32.

The square root of 1376681 is about 1173.3205018238. The cubic root of 1376681 is about 111.2443013535.

The spelling of 1376681 in words is "one million, three hundred seventy-six thousand, six hundred eighty-one".