3645842 has 8 divisors (see below), whose sum is σ = 5525436. Its totient is φ = 1804032.

The previous prime is 3645823. The next prime is 3645877. The reversal of 3645842 is 2485463.

3645842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3613801 + 32041 = 1901^2 + 179^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 3645799 and 3645808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9203 + ... + 9590.

Almost surely, 2^3645842 is an apocalyptic number.

3645842 is a deficient number, since it is larger than the sum of its proper divisors (1879594).

3645842 is a wasteful number, since it uses less digits than its factorization.

3645842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18892.

The product of its digits is 23040, while the sum is 32.

The square root of 3645842 is about 1909.4088090296. The cubic root of 3645842 is about 153.9096844922.

The spelling of 3645842 in words is "three million, six hundred forty-five thousand, eight hundred forty-two".