8642280523 has 4 divisors (see below), whose sum is σ = 8826158880. Its totient is φ = 8458402168.

The previous prime is 8642280509. The next prime is 8642280527. The reversal of 8642280523 is 3250822468.

It is a happy number.

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-8642280523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8642280527) 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, 91939108 + ... + 91939201.

It is an arithmetic number, because the mean of its divisors is an integer number (2206539720).

Almost surely, 2^8642280523 is an apocalyptic number.

8642280523 is a deficient number, since it is larger than the sum of its proper divisors (183878357).

8642280523 is a wasteful number, since it uses less digits than its factorization.

8642280523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183878356.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 8642280523 is about 92963.8667601558. The cubic root of 8642280523 is about 2052.1516589946.

The spelling of 8642280523 in words is "eight billion, six hundred forty-two million, two hundred eighty thousand, five hundred twenty-three".