1396663 has 2 divisors, whose sum is σ = 1396664. Its totient is φ = 1396662.

The previous prime is 1396657. The next prime is 1396667. The reversal of 1396663 is 3666931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1396663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698331 + 698332.

It is an arithmetic number, because the mean of its divisors is an integer number (698332).

2^1396663 is an apocalyptic number.

1396663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396663 is an equidigital number, since it uses as much as digits as its factorization.

1396663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 34.

The square root of 1396663 is about 1181.8049754507. The cubic root of 1396663 is about 111.7799409952.

The spelling of 1396663 in words is "one million, three hundred ninety-six thousand, six hundred sixty-three".