655678967 has 4 divisors (see below), whose sum is σ = 694248336. Its totient is φ = 617109600.

The previous prime is 655678957. The next prime is 655678979. The reversal of 655678967 is 769876556.

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

It is a cyclic number.

It is not a de Polignac number, because 655678967 - 2¹⁰ = 655677943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655678957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19284659 + ... + 19284692.

It is an arithmetic number, because the mean of its divisors is an integer number (173562084).

Almost surely, 2^655678967 is an apocalyptic number.

655678967 is a deficient number, since it is larger than the sum of its proper divisors (38569369).

655678967 is a wasteful number, since it uses less digits than its factorization.

655678967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38569368.

The product of its digits is 19051200, while the sum is 59.

The square root of 655678967 is about 25606.2290663815. The cubic root of 655678967 is about 868.7545339929.

The spelling of 655678967 in words is "six hundred fifty-five million, six hundred seventy-eight thousand, nine hundred sixty-seven".