1695641 has 2 divisors, whose sum is σ = 1695642. Its totient is φ = 1695640.

The previous prime is 1695623. The next prime is 1695643. The reversal of 1695641 is 1465961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1430416 + 265225 = 1196^2 + 515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1695641 is a prime.

Together with 1695643, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1695598 and 1695607.

It is not a weakly prime, because it can be changed into another prime (1695643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847820 + 847821.

It is an arithmetic number, because the mean of its divisors is an integer number (847821).

2^1695641 is an apocalyptic number.

It is an amenable number.

1695641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1695641 is an equidigital number, since it uses as much as digits as its factorization.

1695641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 1695641 is about 1302.1678079265. The cubic root of 1695641 is about 119.2462241713.

The spelling of 1695641 in words is "one million, six hundred ninety-five thousand, six hundred forty-one".