1376881 has 16 divisors (see below), whose sum is σ = 1641600. Its totient is φ = 1140480.

The previous prime is 1376839. The next prime is 1376897. The reversal of 1376881 is 1886731.

It is not a de Polignac number, because 1376881 - 2¹¹ = 1374833 is a prime.

It is a super-3 number, since 3×1376881³ = 7830878320333217523, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

1376881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1376981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6820 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^1376881 is an apocalyptic number.

1376881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1376881 is a deficient number, since it is larger than the sum of its proper divisors (264719).

1376881 is a wasteful number, since it uses less digits than its factorization.

1376881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 8064, while the sum is 34.

The square root of 1376881 is about 1173.4057269334. The cubic root of 1376881 is about 111.2496881698.

The spelling of 1376881 in words is "one million, three hundred seventy-six thousand, eight hundred eighty-one".