7643136 has 56 divisors (see below), whose sum is σ = 20445984. Its totient is φ = 2539520.

The previous prime is 7643131. The next prime is 7643137. The reversal of 7643136 is 6313467.

It is not an unprimeable number, because it can be changed into a prime (7643131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24421 + ... + 24731.

Almost surely, 2^7643136 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 7643136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10222992).

7643136 is an abundant number, since it is smaller than the sum of its proper divisors (12802848).

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

7643136 is an equidigital number, since it uses as much as digits as its factorization.

7643136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 316 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 7643136 is about 2764.6222165063. The cubic root of 7643136 is about 196.9807843695.

It can be divided in two parts, 76431 and 36, that added together give a palindrome (76467).

The spelling of 7643136 in words is "seven million, six hundred forty-three thousand, one hundred thirty-six".