655849530 has 96 divisors (see below), whose sum is σ = 1996420608. Its totient is φ = 146246400.

The previous prime is 655849501. The next prime is 655849559. The reversal of 655849530 is 35948556.

655849530 is a `hidden beast` number, since 6 + 558 + 4 + 95 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (655849501) and next prime (655849559).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13135 + ... + 38525.

It is an arithmetic number, because the mean of its divisors is an integer number (20796048).

Almost surely, 2^655849530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655849530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998210304).

655849530 is an abundant number, since it is smaller than the sum of its proper divisors (1340571078).

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

655849530 is a wasteful number, since it uses less digits than its factorization.

655849530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25452 (or 25449 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 655849530 is about 25609.5593480247. The cubic root of 655849530 is about 868.8298577109.

The spelling of 655849530 in words is "six hundred fifty-five million, eight hundred forty-nine thousand, five hundred thirty".