655346664 has 192 divisors, whose sum is σ = 2108471040. Its totient is φ = 179988480.

The previous prime is 655346599. The next prime is 655346687. The reversal of 655346664 is 466643556.

655346664 = 2352² + 2353² + ... + 2464².

Its product of digits (1555200) is a multiple of the sum of its prime factors (480).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2107069 + ... + 2107379.

It is an arithmetic number, because the mean of its divisors is an integer number (10981620).

Almost surely, 2^655346664 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 655346664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054235520).

655346664 is an abundant number, since it is smaller than the sum of its proper divisors (1453124376).

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

655346664 is a wasteful number, since it uses less digits than its factorization.

655346664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 473 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The square root of 655346664 is about 25599.7395299249. The cubic root of 655346664 is about 868.6077454290.

The spelling of 655346664 in words is "six hundred fifty-five million, three hundred forty-six thousand, six hundred sixty-four".