655605763 has 4 divisors (see below), whose sum is σ = 676754368. Its totient is φ = 634457160.

The previous prime is 655605757. The next prime is 655605779. The reversal of 655605763 is 367506556.

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

It is a de Polignac number, because none of the positive numbers 2^k-655605763 is a prime.

It is a super-4 number, since 4×655605763⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655603763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10574256 + ... + 10574317.

It is an arithmetic number, because the mean of its divisors is an integer number (169188592).

Almost surely, 2^655605763 is an apocalyptic number.

655605763 is a deficient number, since it is larger than the sum of its proper divisors (21148605).

655605763 is a wasteful number, since it uses less digits than its factorization.

655605763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21148604.

The product of its (nonzero) digits is 567000, while the sum is 43.

The square root of 655605763 is about 25604.7996086671. The cubic root of 655605763 is about 868.7222017708.

The spelling of 655605763 in words is "six hundred fifty-five million, six hundred five thousand, seven hundred sixty-three".