655409776 has 20 divisors (see below), whose sum is σ = 1451264752. Its totient is φ = 280889856.

The previous prime is 655409747. The next prime is 655409779. The reversal of 655409776 is 677904556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655409779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2925825 + ... + 2926048.

Almost surely, 2^655409776 is an apocalyptic number.

It is an amenable number.

655409776 is an abundant number, since it is smaller than the sum of its proper divisors (795854976).

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

655409776 is a wasteful number, since it uses less digits than its factorization.

655409776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851888 (or 5851882 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The square root of 655409776 is about 25600.9721690408. The cubic root of 655409776 is about 868.6356277776.

The spelling of 655409776 in words is "six hundred fifty-five million, four hundred nine thousand, seven hundred seventy-six".