1606477 has 4 divisors (see below), whose sum is σ = 1612476. Its totient is φ = 1600480.

The previous prime is 1606463. The next prime is 1606487. The reversal of 1606477 is 7746061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7746061 = 37 ⋅209353.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 594441 = 1006^2 + 771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606477 - 2⁷ = 1606349 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606427) 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, 2578 + ... + 3139.

It is an arithmetic number, because the mean of its divisors is an integer number (403119).

2^1606477 is an apocalyptic number.

It is an amenable number.

1606477 is a deficient number, since it is larger than the sum of its proper divisors (5999).

1606477 is an equidigital number, since it uses as much as digits as its factorization.

1606477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 1606477 is about 1267.4687372870. The cubic root of 1606477 is about 117.1183209000.

The spelling of 1606477 in words is "one million, six hundred six thousand, four hundred seventy-seven".