1391627 has 2 divisors, whose sum is σ = 1391628. Its totient is φ = 1391626.

The previous prime is 1391597. The next prime is 1391629. The reversal of 1391627 is 7261931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1391627 - 2⁶ = 1391563 is a prime.

Together with 1391629, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1391627.

It is not a weakly prime, because it can be changed into another prime (1391629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695813 + 695814.

It is an arithmetic number, because the mean of its divisors is an integer number (695814).

2^1391627 is an apocalyptic number.

1391627 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391627 is an equidigital number, since it uses as much as digits as its factorization.

1391627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 1391627 is about 1179.6724121552. The cubic root of 1391627 is about 111.6454294902.

The spelling of 1391627 in words is "one million, three hundred ninety-one thousand, six hundred twenty-seven".