1428613 has 2 divisors, whose sum is σ = 1428614. Its totient is φ = 1428612.

The previous prime is 1428601. The next prime is 1428631. The reversal of 1428613 is 3168241.

Together with next prime (1428631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1117249 + 311364 = 1057^2 + 558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714306 + 714307.

It is an arithmetic number, because the mean of its divisors is an integer number (714307).

2^1428613 is an apocalyptic number.

It is an amenable number.

1428613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428613 is an equidigital number, since it uses as much as digits as its factorization.

1428613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 1428613 is about 1195.2459997841. The cubic root of 1428613 is about 112.6258804942.

The spelling of 1428613 in words is "one million, four hundred twenty-eight thousand, six hundred thirteen".