7545564 has 72 divisors (see below), whose sum is σ = 21464352. Its totient is φ = 2217600.

The previous prime is 7545563. The next prime is 7545581. The reversal of 7545564 is 4655457.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7545563) 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, 10414 + ... + 11114.

It is an arithmetic number, because the mean of its divisors is an integer number (298116).

Almost surely, 2^7545564 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 7545564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10732176).

7545564 is an abundant number, since it is smaller than the sum of its proper divisors (13918788).

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

7545564 is a wasteful number, since it uses less digits than its factorization.

7545564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 742 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 7545564 is about 2746.9190013541. The cubic root of 7545564 is about 196.1389754320.

The spelling of 7545564 in words is "seven million, five hundred forty-five thousand, five hundred sixty-four".