523665480 has 128 divisors (see below), whose sum is σ = 1719889920. Its totient is φ = 126766080.

The previous prime is 523665469. The next prime is 523665487. The reversal of 523665480 is 84566325.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (523665487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92409 + ... + 97911.

It is an arithmetic number, because the mean of its divisors is an integer number (13436640).

Almost surely, 2^523665480 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 523665480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859944960).

523665480 is an abundant number, since it is smaller than the sum of its proper divisors (1196224440).

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

523665480 is a wasteful number, since it uses less digits than its factorization.

523665480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5587 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 523665480 is about 22883.7383309633. The cubic root of 523665480 is about 806.0302024489.

The spelling of 523665480 in words is "five hundred twenty-three million, six hundred sixty-five thousand, four hundred eighty".