655419089 has 16 divisors (see below), whose sum is σ = 722711808. Its totient is φ = 590604672.

The previous prime is 655419067. The next prime is 655419101. The reversal of 655419089 is 980914556.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655419089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (655419059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284189 + ... + 286485.

It is an arithmetic number, because the mean of its divisors is an integer number (45169488).

Almost surely, 2^655419089 is an apocalyptic number.

It is an amenable number.

655419089 is a deficient number, since it is larger than the sum of its proper divisors (67292719).

655419089 is a wasteful number, since it uses less digits than its factorization.

655419089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 655419089 is about 25601.1540560186. The cubic root of 655419089 is about 868.6397420308.

The spelling of 655419089 in words is "six hundred fifty-five million, four hundred nineteen thousand, eighty-nine".