3578985 has 20 divisors (see below), whose sum is σ = 6416388. Its totient is φ = 1908576.

The previous prime is 3578969. The next prime is 3578989. The reversal of 3578985 is 5898753.

It can be written as a sum of positive squares in 2 ways, for example, as 2832489 + 746496 = 1683^2 + 864^2 .

It is not a de Polignac number, because 3578985 - 2⁴ = 3578969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 3578985.

It is not an unprimeable number, because it can be changed into a prime (3578989) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4014 + ... + 4823.

Almost surely, 2^3578985 is an apocalyptic number.

It is an amenable number.

3578985 is a deficient number, since it is larger than the sum of its proper divisors (2837403).

3578985 is an equidigital number, since it uses as much as digits as its factorization.

3578985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854 (or 8845 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 3578985 is about 1891.8205517437. The cubic root of 3578985 is about 152.9630822115.

The spelling of 3578985 in words is "three million, five hundred seventy-eight thousand, nine hundred eighty-five".