655348578 has 16 divisors (see below), whose sum is σ = 1326489696. Its totient is φ = 215817440.

The previous prime is 655348567. The next prime is 655348601. The reversal of 655348578 is 875843556.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 655348578.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657483 + ... + 658478.

It is an arithmetic number, because the mean of its divisors is an integer number (82905606).

Almost surely, 2^655348578 is an apocalyptic number.

655348578 is an abundant number, since it is smaller than the sum of its proper divisors (671141118).

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

655348578 is a wasteful number, since it uses less digits than its factorization.

655348578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316049.

The product of its digits is 4032000, while the sum is 51.

The square root of 655348578 is about 25599.7769130905. The cubic root of 655348578 is about 868.6085910444.

The spelling of 655348578 in words is "six hundred fifty-five million, three hundred forty-eight thousand, five hundred seventy-eight".