1345641 has 16 divisors (see below), whose sum is σ = 1979328. Its totient is φ = 813120.

The previous prime is 1345633. The next prime is 1345649. The reversal of 1345641 is 1465431.

It is an interprime number because it is at equal distance from previous prime (1345633) and next prime (1345649).

It is not a de Polignac number, because 1345641 - 2³ = 1345633 is a prime.

1345641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1345649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825 + ... + 4161.

It is an arithmetic number, because the mean of its divisors is an integer number (123708).

2^1345641 is an apocalyptic number.

1345641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1345641 is a deficient number, since it is larger than the sum of its proper divisors (633687).

1345641 is an equidigital number, since it uses as much as digits as its factorization.

1345641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 351 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1345641 is about 1160.0176722792. The cubic root of 1345641 is about 110.4018634164.

It can be divided in two parts, 134 and 5641, that added together give a palindrome (5775).

The spelling of 1345641 in words is "one million, three hundred forty-five thousand, six hundred forty-one".