505660680 has 384 divisors, whose sum is σ = 2021760000. Its totient is φ = 107039232.

The previous prime is 505660679. The next prime is 505660703. The reversal of 505660680 is 86066505.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2824831 + ... + 2825009.

It is an arithmetic number, because the mean of its divisors is an integer number (5265000).

Almost surely, 2^505660680 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 505660680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010880000).

505660680 is an abundant number, since it is smaller than the sum of its proper divisors (1516099320).

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

505660680 is a wasteful number, since it uses less digits than its factorization.

505660680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 505660680 is about 22486.9001865531. The cubic root of 505660680 is about 796.6845495500.

The spelling of 505660680 in words is "five hundred five million, six hundred sixty thousand, six hundred eighty".