1356671 has 2 divisors, whose sum is σ = 1356672. Its totient is φ = 1356670.

The previous prime is 1356659. The next prime is 1356689. The reversal of 1356671 is 1766531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1356671 - 2¹⁰ = 1355647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678335 + 678336.

It is an arithmetic number, because the mean of its divisors is an integer number (678336).

2^1356671 is an apocalyptic number.

1356671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356671 is an equidigital number, since it uses as much as digits as its factorization.

1356671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 1356671 is about 1164.7622074913. The cubic root of 1356671 is about 110.7026916554.

The spelling of 1356671 in words is "one million, three hundred fifty-six thousand, six hundred seventy-one".