655207164 has 96 divisors (see below), whose sum is σ = 1783111680. Its totient is φ = 207662400.

The previous prime is 655207159. The next prime is 655207169. The reversal of 655207164 is 461702556.

It is a happy number.

655207164 is a `hidden beast` number, since 6 + 5 + 520 + 71 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (655207159) and next prime (655207169).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655207169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473754 + ... + 475134.

It is an arithmetic number, because the mean of its divisors is an integer number (18574080).

Almost surely, 2^655207164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655207164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891555840).

655207164 is an abundant number, since it is smaller than the sum of its proper divisors (1127904516).

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

655207164 is a wasteful number, since it uses less digits than its factorization.

655207164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 655207164 is about 25597.0147478178. The cubic root of 655207164 is about 868.5461091553.

The spelling of 655207164 in words is "six hundred fifty-five million, two hundred seven thousand, one hundred sixty-four".