1457663 has 2 divisors, whose sum is σ = 1457664. Its totient is φ = 1457662.

The previous prime is 1457653. The next prime is 1457683. The reversal of 1457663 is 3667541.

It is a weak prime.

It is an emirp because it is prime and its reverse (3667541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1457663 - 2⁴ = 1457647 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 (1457633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728831 + 728832.

It is an arithmetic number, because the mean of its divisors is an integer number (728832).

2^1457663 is an apocalyptic number.

1457663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457663 is an equidigital number, since it uses as much as digits as its factorization.

1457663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 1457663 is about 1207.3371525800. The cubic root of 1457663 is about 113.3841573278.

The spelling of 1457663 in words is "one million, four hundred fifty-seven thousand, six hundred sixty-three".