526685640 has 128 divisors (see below), whose sum is σ = 1709043840. Its totient is φ = 129079296.

The previous prime is 526685611. The next prime is 526685689. The reversal of 526685640 is 46586625.

It is a junction number, because it is equal to n+sod(n) for n = 526685592 and 526685601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440884 + ... + 442076.

It is an arithmetic number, because the mean of its divisors is an integer number (13351905).

Almost surely, 2^526685640 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 526685640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854521920).

526685640 is an abundant number, since it is smaller than the sum of its proper divisors (1182358200).

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

526685640 is a wasteful number, since it uses less digits than its factorization.

526685640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 526685640 is about 22949.6326767990. The cubic root of 526685640 is about 807.5767847057.

The spelling of 526685640 in words is "five hundred twenty-six million, six hundred eighty-five thousand, six hundred forty".