1606791 has 8 divisors (see below), whose sum is σ = 2157184. Its totient is φ = 1063800.

The previous prime is 1606783. The next prime is 1606793. The reversal of 1606791 is 1976061.

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

It is not a de Polignac number, because 1606791 - 2³ = 1606783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606793) 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, 1321 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (269648).

2^1606791 is an apocalyptic number.

1606791 is a deficient number, since it is larger than the sum of its proper divisors (550393).

1606791 is a wasteful number, since it uses less digits than its factorization.

1606791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1606791 is about 1267.5926001677. The cubic root of 1606791 is about 117.1259510035.

The spelling of 1606791 in words is "one million, six hundred six thousand, seven hundred ninety-one".