3622405 has 4 divisors (see below), whose sum is σ = 4346892. Its totient is φ = 2897920.

The previous prime is 3622393. The next prime is 3622427. The reversal of 3622405 is 5042263.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5042263 = 2081 ⋅2423.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 3101121 = 722^2 + 1761^2 .

It is not a de Polignac number, because 3622405 - 2⁵ = 3622373 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 362236 + ... + 362245.

It is an arithmetic number, because the mean of its divisors is an integer number (1086723).

Almost surely, 2^3622405 is an apocalyptic number.

It is an amenable number.

3622405 is a deficient number, since it is larger than the sum of its proper divisors (724487).

3622405 is an equidigital number, since it uses as much as digits as its factorization.

3622405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724486.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3622405 is about 1903.2616740743. The cubic root of 3622405 is about 153.5791766160.

Adding to 3622405 its reverse (5042263), we get a palindrome (8664668).

The spelling of 3622405 in words is "three million, six hundred twenty-two thousand, four hundred five".