1071385 has 12 divisors (see below), whose sum is σ = 1495908. Its totient is φ = 734496.

The previous prime is 1071379. The next prime is 1071401. The reversal of 1071385 is 5831701.

It can be written as a sum of positive squares in 2 ways, for example, as 499849 + 571536 = 707^2 + 756^2 .

It is not a de Polignac number, because 1071385 - 2³ = 1071377 is a prime.

It is a super-2 number, since 2×1071385² = 2295731636450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1942 + ... + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (124659).

2^1071385 is an apocalyptic number.

It is an amenable number.

1071385 is a deficient number, since it is larger than the sum of its proper divisors (424523).

1071385 is an equidigital number, since it uses as much as digits as its factorization.

1071385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1071385 is about 1035.0772918000. The cubic root of 1071385 is about 102.3250236992.

The spelling of 1071385 in words is "one million, seventy-one thousand, three hundred eighty-five".