1337663 has 2 divisors, whose sum is σ = 1337664. Its totient is φ = 1337662.

The previous prime is 1337647. The next prime is 1337671. The reversal of 1337663 is 3667331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1337663 - 2⁴ = 1337647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1337603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668831 + 668832.

It is an arithmetic number, because the mean of its divisors is an integer number (668832).

2^1337663 is an apocalyptic number.

1337663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337663 is an equidigital number, since it uses as much as digits as its factorization.

1337663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 29.

The square root of 1337663 is about 1156.5738195204. The cubic root of 1337663 is about 110.1832482774.

The spelling of 1337663 in words is "one million, three hundred thirty-seven thousand, six hundred sixty-three".