505650 has 24 divisors (see below), whose sum is σ = 1254384. Its totient is φ = 134800.

The previous prime is 505643. The next prime is 505657. The reversal of 505650 is 56505.

It is an interprime number because it is at equal distance from previous prime (505643) and next prime (505657).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (505657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1536 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (52266).

2⁵⁰⁵⁶⁵⁰ is an apocalyptic number.

505650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505650 is an abundant number, since it is smaller than the sum of its proper divisors (748734).

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

505650 is a wasteful number, since it uses less digits than its factorization.

505650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386 (or 3381 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 505650 is about 711.0907115130. The cubic root of 505650 is about 79.6678940617.

The spelling of 505650 in words is "five hundred five thousand, six hundred fifty".