1965505 has 8 divisors (see below), whose sum is σ = 2403432. Its totient is φ = 1542528.

The previous prime is 1965503. The next prime is 1965517. The reversal of 1965505 is 5055691.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 638401 + 1327104 = 799^2 + 1152^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1965505 - 2¹ = 1965503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3444 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (300429).

2^1965505 is an apocalyptic number.

It is an amenable number.

1965505 is a deficient number, since it is larger than the sum of its proper divisors (437927).

1965505 is an equidigital number, since it uses as much as digits as its factorization.

1965505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 1965505 is about 1401.9646928507. The cubic root of 1965505 is about 125.2635506048.

The spelling of 1965505 in words is "one million, nine hundred sixty-five thousand, five hundred five".