655620155 has 12 divisors (see below), whose sum is σ = 803853120. Its totient is φ = 513327984.

The previous prime is 655620151. The next prime is 655620169. The reversal of 655620155 is 551026556.

It is not a de Polignac number, because 655620155 - 2² = 655620151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655620151) 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 11 ways as a sum of consecutive naturals, for example, 18635 + ... + 40724.

It is an arithmetic number, because the mean of its divisors is an integer number (66987760).

Almost surely, 2^655620155 is an apocalyptic number.

655620155 is a deficient number, since it is larger than the sum of its proper divisors (148232965).

655620155 is an equidigital number, since it uses as much as digits as its factorization.

655620155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59458 (or 59411 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 655620155 is about 25605.0806481839. The cubic root of 655620155 is about 868.7285585171.

The spelling of 655620155 in words is "six hundred fifty-five million, six hundred twenty thousand, one hundred fifty-five".