1606522 has 8 divisors (see below), whose sum is σ = 2416500. Its totient is φ = 801024.

The previous prime is 1606499. The next prime is 1606529. The reversal of 1606522 is 2256061.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 168921 = 1199^2 + 411^2 .

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

It is a super-4 number, since 4×1606522⁴ (a number of 26 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1606493 and 1606502.

It is not an unprimeable number, because it can be changed into a prime (1606529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 1792.

2^1606522 is an apocalyptic number.

1606522 is the 678-th centered heptagonal number.

1606522 is a deficient number, since it is larger than the sum of its proper divisors (809978).

1606522 is a wasteful number, since it uses less digits than its factorization.

1606522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1606522 is about 1267.4864890799. The cubic root of 1606522 is about 117.1194144472.

The spelling of 1606522 in words is "one million, six hundred six thousand, five hundred twenty-two".