655105665 has 24 divisors (see below), whose sum is σ = 1095736320. Its totient is φ = 334194784.

The previous prime is 655105613. The next prime is 655105673. The reversal of 655105665 is 566501556.

It is not a de Polignac number, because 655105665 - 2⁷ = 655105537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33345 + ... + 49214.

It is an arithmetic number, because the mean of its divisors is an integer number (45655680).

Almost surely, 2^655105665 is an apocalyptic number.

It is an amenable number.

655105665 is a deficient number, since it is larger than the sum of its proper divisors (440630655).

655105665 is a wasteful number, since it uses less digits than its factorization.

655105665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82613 (or 82590 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 655105665 is about 25595.0320374873. The cubic root of 655105665 is about 868.5012576341.

The spelling of 655105665 in words is "six hundred fifty-five million, one hundred five thousand, six hundred sixty-five".