411240645 has 20 divisors (see below), whose sum is σ = 737187660. Its totient is φ = 219328128.

The previous prime is 411240631. The next prime is 411240649. The reversal of 411240645 is 546042114.

411240645 is a `hidden beast` number, since 4 + 1 + 12 + 4 + 0 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124344801 + 286895844 = 11151^2 + 16938^2 .

It is not a de Polignac number, because 411240645 - 2⁴ = 411240629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411240649) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 507300 + ... + 508109.

It is an arithmetic number, because the mean of its divisors is an integer number (36859383).

Almost surely, 2^411240645 is an apocalyptic number.

411240645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

411240645 is a deficient number, since it is larger than the sum of its proper divisors (325947015).

411240645 is a wasteful number, since it uses less digits than its factorization.

411240645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015426 (or 1015417 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 411240645 is about 20279.0691354411. The cubic root of 411240645 is about 743.6444548578.

Adding to 411240645 its reverse (546042114), we get a palindrome (957282759).

The spelling of 411240645 in words is "four hundred eleven million, two hundred forty thousand, six hundred forty-five".