655065030 has 64 divisors (see below), whose sum is σ = 1647249408. Its totient is φ = 166510080.

The previous prime is 655065017. The next prime is 655065043. The reversal of 655065030 is 30560556.

It is an interprime number because it is at equal distance from previous prime (655065017) and next prime (655065043).

It is a super-2 number, since 2×655065030² = 858220387057801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57054 + ... + 67566.

It is an arithmetic number, because the mean of its divisors is an integer number (25738272).

Almost surely, 2^655065030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655065030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823624704).

655065030 is an abundant number, since it is smaller than the sum of its proper divisors (992184378).

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

655065030 is a wasteful number, since it uses less digits than its factorization.

655065030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 655065030 is about 25594.2382187867. The cubic root of 655065030 is about 868.4833000840.

The spelling of 655065030 in words is "six hundred fifty-five million, sixty-five thousand, thirty".