505715620 has 24 divisors (see below), whose sum is σ = 1079415288. Its totient is φ = 198969600.

The previous prime is 505715569. The next prime is 505715621. The reversal of 505715620 is 26517505.

It can be written as a sum of positive squares in 4 ways, for example, as 5476 + 505710144 = 74^2 + 22488^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (505715621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206041 + ... + 208480.

It is an arithmetic number, because the mean of its divisors is an integer number (44975637).

Almost surely, 2^505715620 is an apocalyptic number.

It is an amenable number.

505715620 is an abundant number, since it is smaller than the sum of its proper divisors (573699668).

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

505715620 is a wasteful number, since it uses less digits than its factorization.

505715620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414591 (or 414589 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 505715620 is about 22488.1217534947. The cubic root of 505715620 is about 796.7134017466.

The spelling of 505715620 in words is "five hundred five million, seven hundred fifteen thousand, six hundred twenty".