1427687 has 2 divisors, whose sum is σ = 1427688. Its totient is φ = 1427686.

The previous prime is 1427681. The next prime is 1427707. The reversal of 1427687 is 7867241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1427687 - 2⁸ = 1427431 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 1 + 4⁷ + 2¹⁹ + 7⁵ + 6⁶ + 8 + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713843 + 713844.

It is an arithmetic number, because the mean of its divisors is an integer number (713844).

2^1427687 is an apocalyptic number.

1427687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427687 is an equidigital number, since it uses as much as digits as its factorization.

1427687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 1427687 is about 1194.8585690365. The cubic root of 1427687 is about 112.6015412442.

The spelling of 1427687 in words is "one million, four hundred twenty-seven thousand, six hundred eighty-seven".