655611059 has 4 divisors (see below), whose sum is σ = 658030560. Its totient is φ = 653191560.

The previous prime is 655611031. The next prime is 655611071. The reversal of 655611059 is 950116556.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655611059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655611259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209344 + ... + 1209885.

It is an arithmetic number, because the mean of its divisors is an integer number (164507640).

Almost surely, 2^655611059 is an apocalyptic number.

655611059 is a deficient number, since it is larger than the sum of its proper divisors (2419501).

655611059 is a wasteful number, since it uses less digits than its factorization.

655611059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419500.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 655611059 is about 25604.9030265690. The cubic root of 655611059 is about 868.7245409512.

The spelling of 655611059 in words is "six hundred fifty-five million, six hundred eleven thousand, fifty-nine".