3912645 has 32 divisors (see below), whose sum is σ = 7133184. Its totient is φ = 1812800.

The previous prime is 3912611. The next prime is 3912647. The reversal of 3912645 is 5462193.

It is not a de Polignac number, because 3912645 - 2¹¹ = 3910597 is a prime.

3912645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3280 + ... + 4310.

It is an arithmetic number, because the mean of its divisors is an integer number (222912).

Almost surely, 2^3912645 is an apocalyptic number.

It is an amenable number.

3912645 is a deficient number, since it is larger than the sum of its proper divisors (3220539).

3912645 is a wasteful number, since it uses less digits than its factorization.

3912645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 6480, while the sum is 30.

The square root of 3912645 is about 1978.0406972557. The cubic root of 3912645 is about 157.5760277941.

The spelling of 3912645 in words is "three million, nine hundred twelve thousand, six hundred forty-five".