2071605 has 8 divisors (see below), whose sum is σ = 3314592. Its totient is φ = 1104848.

The previous prime is 2071591. The next prime is 2071613. The reversal of 2071605 is 5061702.

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 2071605 - 2¹⁰ = 2070581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69039 + ... + 69068.

It is an arithmetic number, because the mean of its divisors is an integer number (414324).

2^2071605 is an apocalyptic number.

It is an amenable number.

2071605 is a deficient number, since it is larger than the sum of its proper divisors (1242987).

2071605 is a wasteful number, since it uses less digits than its factorization.

2071605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138115.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2071605 is about 1439.3071249737. The cubic root of 2071605 is about 127.4781200440.

The spelling of 2071605 in words is "two million, seventy-one thousand, six hundred five".