655728078 has 16 divisors (see below), whose sum is σ = 1311762816. Its totient is φ = 218524920.

The previous prime is 655728071. The next prime is 655728083. The reversal of 655728078 is 870827556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655728071) 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 7 ways as a sum of consecutive naturals, for example, 22525 + ... + 42647.

It is an arithmetic number, because the mean of its divisors is an integer number (81985176).

Almost surely, 2^655728078 is an apocalyptic number.

655728078 is an abundant number, since it is smaller than the sum of its proper divisors (656034738).

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

655728078 is a wasteful number, since it uses less digits than its factorization.

655728078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559.

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 655728078 is about 25607.1880143057. The cubic root of 655728078 is about 868.7762236412.

The spelling of 655728078 in words is "six hundred fifty-five million, seven hundred twenty-eight thousand, seventy-eight".