1007663 has 4 divisors (see below), whose sum is σ = 1042440. Its totient is φ = 972888.

The previous prime is 1007651. The next prime is 1007681. The reversal of 1007663 is 3667001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1007663 - 2⁴ = 1007647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17345 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (260610).

2^1007663 is an apocalyptic number.

1007663 is a deficient number, since it is larger than the sum of its proper divisors (34777).

1007663 is an equidigital number, since it uses as much as digits as its factorization.

1007663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34776.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1007663 is about 1003.8241877939. The cubic root of 1007663 is about 100.2547836350.

The spelling of 1007663 in words is "one million, seven thousand, six hundred sixty-three".