3641345 has 4 divisors (see below), whose sum is σ = 4369620. Its totient is φ = 2913072.

The previous prime is 3641311. The next prime is 3641357. The reversal of 3641345 is 5431463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5431463 = 233 ⋅23311.

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 2093809 = 1244^2 + 1447^2 .

It is a cyclic number.

It is not a de Polignac number, because 3641345 - 2²⁰ = 2592769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364130 + ... + 364139.

It is an arithmetic number, because the mean of its divisors is an integer number (1092405).

It is a Proth number, since it is equal to 889 ⋅ 2¹² + 1 and 889 < 2¹².

Almost surely, 2^3641345 is an apocalyptic number.

It is an amenable number.

3641345 is a deficient number, since it is larger than the sum of its proper divisors (728275).

3641345 is an equidigital number, since it uses as much as digits as its factorization.

3641345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728274.

The product of its digits is 4320, while the sum is 26.

The square root of 3641345 is about 1908.2308560549. The cubic root of 3641345 is about 153.8463779804.

The spelling of 3641345 in words is "three million, six hundred forty-one thousand, three hundred forty-five".