523466640 has 120 divisors (see below), whose sum is σ = 1780421760. Its totient is φ = 137809152.

The previous prime is 523466623. The next prime is 523466653. The reversal of 523466640 is 46664325.

523466640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 523466595 and 523466604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52279 + ... + 61481.

It is an arithmetic number, because the mean of its divisors is an integer number (14836848).

Almost surely, 2^523466640 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 523466640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890210880).

523466640 is an abundant number, since it is smaller than the sum of its proper divisors (1256955120).

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

523466640 is a wasteful number, since it uses less digits than its factorization.

523466640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301 (or 9292 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 523466640 is about 22879.3933486008. The cubic root of 523466640 is about 805.9281708140.

The spelling of 523466640 in words is "five hundred twenty-three million, four hundred sixty-six thousand, six hundred forty".