1377081 has 14 divisors (see below), whose sum is σ = 2065770. Its totient is φ = 917568.

The previous prime is 1377071. The next prime is 1377107. The reversal of 1377081 is 1807731.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 210681 = 1080^2 + 459^2 .

It is not a de Polignac number, because 1377081 - 2¹⁸ = 1114937 is a prime.

It is a super-2 number, since 2×1377081² = 3792704161122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1377031) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 216 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (147555).

2^1377081 is an apocalyptic number.

It is an amenable number.

1377081 is a deficient number, since it is larger than the sum of its proper divisors (688689).

1377081 is an frugal number, since it uses more digits than its factorization.

1377081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 1377081 is about 1173.4909458534. The cubic root of 1377081 is about 111.2550744645.

The spelling of 1377081 in words is "one million, three hundred seventy-seven thousand, eighty-one".