7641523 has 4 divisors (see below), whose sum is σ = 7654720. Its totient is φ = 7628328.

The previous prime is 7641511. The next prime is 7641527. The reversal of 7641523 is 3251467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7641523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7641491 and 7641500.

It is not an unprimeable number, because it can be changed into a prime (7641527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5688 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (1913680).

Almost surely, 2^7641523 is an apocalyptic number.

7641523 is a deficient number, since it is larger than the sum of its proper divisors (13197).

7641523 is a wasteful number, since it uses less digits than its factorization.

7641523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13196.

The product of its digits is 5040, while the sum is 28.

The square root of 7641523 is about 2764.3304795194. The cubic root of 7641523 is about 196.9669265168.

The spelling of 7641523 in words is "seven million, six hundred forty-one thousand, five hundred twenty-three".