1087385 has 8 divisors (see below), whose sum is σ = 1405320. Its totient is φ = 802944.

The previous prime is 1087381. The next prime is 1087391. The reversal of 1087385 is 5837801.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 1042441 = 212^2 + 1021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1087385 - 2² = 1087381 is a prime.

It is a super-2 number, since 2×1087385² = 2364812276450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1087381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8300 + ... + 8429.

It is an arithmetic number, because the mean of its divisors is an integer number (175665).

2^1087385 is an apocalyptic number.

It is an amenable number.

1087385 is a deficient number, since it is larger than the sum of its proper divisors (317935).

1087385 is a wasteful number, since it uses less digits than its factorization.

1087385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16747.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1087385 is about 1042.7775409933. Note that the first 3 decimals coincide. The cubic root of 1087385 is about 102.8318808294.

The spelling of 1087385 in words is "one million, eighty-seven thousand, three hundred eighty-five".