3561985 has 8 divisors (see below), whose sum is σ = 4885056. Its totient is φ = 2442480.

The previous prime is 3561977. The next prime is 3561997. The reversal of 3561985 is 5891653.

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

It is not a de Polignac number, because 3561985 - 2³ = 3561977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50851 + ... + 50920.

It is an arithmetic number, because the mean of its divisors is an integer number (610632).

Almost surely, 2^3561985 is an apocalyptic number.

3561985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3561985 is a deficient number, since it is larger than the sum of its proper divisors (1323071).

3561985 is a wasteful number, since it uses less digits than its factorization.

3561985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101783.

The product of its digits is 32400, while the sum is 37.

The square root of 3561985 is about 1887.3221770540. The cubic root of 3561985 is about 152.7205087342.

The spelling of 3561985 in words is "three million, five hundred sixty-one thousand, nine hundred eighty-five".