655680530 has 16 divisors (see below), whose sum is σ = 1183049280. Its totient is φ = 261644592.

The previous prime is 655680499. The next prime is 655680539. The reversal of 655680530 is 35086556.

It is not an unprimeable number, because it can be changed into a prime (655680539) 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, 74054 + ... + 82433.

It is an arithmetic number, because the mean of its divisors is an integer number (73940580).

Almost surely, 2^655680530 is an apocalyptic number.

655680530 is a deficient number, since it is larger than the sum of its proper divisors (527368750).

655680530 is a wasteful number, since it uses less digits than its factorization.

655680530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156913.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 655680530 is about 25606.2595862809. The cubic root of 655680530 is about 868.7552243013.

The spelling of 655680530 in words is "six hundred fifty-five million, six hundred eighty thousand, five hundred thirty".