1607663 has 2 divisors, whose sum is σ = 1607664. Its totient is φ = 1607662.

The previous prime is 1607659. The next prime is 1607681. The reversal of 1607663 is 3667061.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3667061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1607663 - 2² = 1607659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1607603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803831 + 803832.

It is an arithmetic number, because the mean of its divisors is an integer number (803832).

2^1607663 is an apocalyptic number.

1607663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1607663 is an equidigital number, since it uses as much as digits as its factorization.

1607663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1607663 is about 1267.9365126062. The cubic root of 1607663 is about 117.1471351232.

The spelling of 1607663 in words is "one million, six hundred seven thousand, six hundred sixty-three".