7643412 has 72 divisors (see below), whose sum is σ = 22568000. Its totient is φ = 2180304.

The previous prime is 7643411. The next prime is 7643413. The reversal of 7643412 is 2143467.

7643412 is a `hidden beast` number, since 7 + 643 + 4 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (7643411) and next prime (7643413).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12039 + ... + 12657.

Almost surely, 2^7643412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7643412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11284000).

7643412 is an abundant number, since it is smaller than the sum of its proper divisors (14924588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7643412 is a wasteful number, since it uses less digits than its factorization.

7643412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 631 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 7643412 is about 2764.6721324598. The cubic root of 7643412 is about 196.9831553876.

Adding to 7643412 its reverse (2143467), we get a palindrome (9786879).

Subtracting from 7643412 its reverse (2143467), we obtain a palindrome (5499945).

The spelling of 7643412 in words is "seven million, six hundred forty-three thousand, four hundred twelve".