1071387 has 12 divisors (see below), whose sum is σ = 1605240. Its totient is φ = 714096.

The previous prime is 1071379. The next prime is 1071401. The reversal of 1071387 is 7831701.

It is not a de Polignac number, because 1071387 - 2³ = 1071379 is a prime.

It is a super-2 number, since 2×1071387² = 2295740207538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1071387.

It is not an unprimeable number, because it can be changed into a prime (1071337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1962 + ... + 2447.

It is an arithmetic number, because the mean of its divisors is an integer number (133770).

2^1071387 is an apocalyptic number.

1071387 is a deficient number, since it is larger than the sum of its proper divisors (533853).

1071387 is an frugal number, since it uses more digits than its factorization.

1071387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424 (or 4412 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 1071387 is about 1035.0782579110. The cubic root of 1071387 is about 102.3250873707.

The spelling of 1071387 in words is "one million, seventy-one thousand, three hundred eighty-seven".