1601465 has 4 divisors (see below), whose sum is σ = 1921764. Its totient is φ = 1281168.

The previous prime is 1601459. The next prime is 1601473. The reversal of 1601465 is 5641061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 426409 + 1175056 = 653^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601465 - 2⁸ = 1601209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160142 + ... + 160151.

It is an arithmetic number, because the mean of its divisors is an integer number (480441).

2^1601465 is an apocalyptic number.

It is an amenable number.

1601465 is a deficient number, since it is larger than the sum of its proper divisors (320299).

1601465 is an equidigital number, since it uses as much as digits as its factorization.

1601465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320298.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1601465 is about 1265.4900236667. The cubic root of 1601465 is about 116.9963960221.

The spelling of 1601465 in words is "one million, six hundred one thousand, four hundred sixty-five".