1609465 has 16 divisors (see below), whose sum is σ = 2270016. Its totient is φ = 1080000.

The previous prime is 1609457. The next prime is 1609477. The reversal of 1609465 is 5649061.

It is not a de Polignac number, because 1609465 - 2³ = 1609457 is a prime.

It is a Duffinian number.

1609465 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411 + ... + 1840.

It is an arithmetic number, because the mean of its divisors is an integer number (141876).

2^1609465 is an apocalyptic number.

It is an amenable number.

1609465 is a deficient number, since it is larger than the sum of its proper divisors (660551).

1609465 is a wasteful number, since it uses less digits than its factorization.

1609465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1609465 is about 1268.6469169946. The cubic root of 1609465 is about 117.1908881391.

The spelling of 1609465 in words is "one million, six hundred nine thousand, four hundred sixty-five".