1605047 has 2 divisors, whose sum is σ = 1605048. Its totient is φ = 1605046.

The previous prime is 1605041. The next prime is 1605053. The reversal of 1605047 is 7405061.

It is a balanced prime because it is at equal distance from previous prime (1605041) and next prime (1605053).

It is an emirp because it is prime and its reverse (7405061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1605047 - 2⁴ = 1605031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1605041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802523 + 802524.

It is an arithmetic number, because the mean of its divisors is an integer number (802524).

2^1605047 is an apocalyptic number.

1605047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605047 is an equidigital number, since it uses as much as digits as its factorization.

1605047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1605047 is about 1266.9044952166. The cubic root of 1605047 is about 117.0835597597.

The spelling of 1605047 in words is "one million, six hundred five thousand, forty-seven".