1380671 has 2 divisors, whose sum is σ = 1380672. Its totient is φ = 1380670.

The previous prime is 1380653. The next prime is 1380677. The reversal of 1380671 is 1760831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1380671 - 2⁶ = 1380607 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1380671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380677) 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 as a sum of consecutive naturals, namely, 690335 + 690336.

It is an arithmetic number, because the mean of its divisors is an integer number (690336).

2^1380671 is an apocalyptic number.

1380671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380671 is an equidigital number, since it uses as much as digits as its factorization.

1380671 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1380671 is about 1175.0195743050. The cubic root of 1380671 is about 111.3516698815.

The spelling of 1380671 in words is "one million, three hundred eighty thousand, six hundred seventy-one".