655665119 has 4 divisors (see below), whose sum is σ = 657801144. Its totient is φ = 653529096.

The previous prime is 655665107. The next prime is 655665121. The reversal of 655665119 is 911566556.

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-655665119 is a prime.

It is a super-2 number, since 2×655665119² = 859793496546568322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655665119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655665169) 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, 1067552 + ... + 1068165.

It is an arithmetic number, because the mean of its divisors is an integer number (164450286).

Almost surely, 2^655665119 is an apocalyptic number.

655665119 is a deficient number, since it is larger than the sum of its proper divisors (2136025).

655665119 is a wasteful number, since it uses less digits than its factorization.

655665119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136024.

The product of its digits is 243000, while the sum is 44.

The square root of 655665119 is about 25605.9586619990. The cubic root of 655665119 is about 868.7484178913.

The spelling of 655665119 in words is "six hundred fifty-five million, six hundred sixty-five thousand, one hundred nineteen".