4105645 has 8 divisors (see below), whose sum is σ = 5020056. Its totient is φ = 3222336.

The previous prime is 4105639. The next prime is 4105657. The reversal of 4105645 is 5465014.

It can be written as a sum of positive squares in 4 ways, for example, as 93636 + 4012009 = 306^2 + 2003^2 .

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 4105645 - 2³ = 4105637 is a prime.

It is a super-3 number, since 3×4105645³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

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 7 ways as a sum of consecutive naturals, for example, 7482 + ... + 8011.

It is an arithmetic number, because the mean of its divisors is an integer number (627507).

Almost surely, 2^4105645 is an apocalyptic number.

It is an amenable number.

4105645 is a deficient number, since it is larger than the sum of its proper divisors (914411).

4105645 is a wasteful number, since it uses less digits than its factorization.

4105645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4105645 is about 2026.2391270529. The cubic root of 4105645 is about 160.1254874923.

The spelling of 4105645 in words is "four million, one hundred five thousand, six hundred forty-five".