1606465 has 24 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 1074528.

The previous prime is 1606463. The next prime is 1606487. The reversal of 1606465 is 5646061.

It is not a de Polignac number, because 1606465 - 2¹ = 1606463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1606463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19314 + ... + 19396.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1606465 is an apocalyptic number.

It is an amenable number.

1606465 is a deficient number, since it is larger than the sum of its proper divisors (691775).

1606465 is an equidigital number, since it uses as much as digits as its factorization.

1606465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1606465 is about 1267.4640034336. The cubic root of 1606465 is about 117.1180292840.

It can be divided in two parts, 16064 and 65, that added together give a square (16129 = 127²).

The spelling of 1606465 in words is "one million, six hundred six thousand, four hundred sixty-five".