1603697 has 2 divisors, whose sum is σ = 1603698. Its totient is φ = 1603696.

The previous prime is 1603681. The next prime is 1603699. The reversal of 1603697 is 7963061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079521 + 524176 = 1039^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603697 - 2⁴ = 1603681 is a prime.

Together with 1603699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1603699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801848 + 801849.

It is an arithmetic number, because the mean of its divisors is an integer number (801849).

2^1603697 is an apocalyptic number.

It is an amenable number.

1603697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603697 is an equidigital number, since it uses as much as digits as its factorization.

1603697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 1603697 is about 1266.3715884368. The cubic root of 1603697 is about 117.0507243471.

The spelling of 1603697 in words is "one million, six hundred three thousand, six hundred ninety-seven".