1376861 has 4 divisors (see below), whose sum is σ = 1385472. Its totient is φ = 1368252.

The previous prime is 1376839. The next prime is 1376897. The reversal of 1376861 is 1686731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1686731 = 691 ⋅2441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376861 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 (1376161) 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, 4061 + ... + 4386.

It is an arithmetic number, because the mean of its divisors is an integer number (346368).

2^1376861 is an apocalyptic number.

It is an amenable number.

1376861 is a deficient number, since it is larger than the sum of its proper divisors (8611).

1376861 is an equidigital number, since it uses as much as digits as its factorization.

1376861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8610.

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

The square root of 1376861 is about 1173.3972047009. The cubic root of 1376861 is about 111.2491495117.

The spelling of 1376861 in words is "one million, three hundred seventy-six thousand, eight hundred sixty-one".