676616565 has 16 divisors (see below), whose sum is σ = 1087446528. Its totient is φ = 359242176.

The previous prime is 676616561. The next prime is 676616587. The reversal of 676616565 is 565616676.

It is a happy number.

It is not a de Polignac number, because 676616565 - 2² = 676616561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676616561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97794 + ... + 104483.

It is an arithmetic number, because the mean of its divisors is an integer number (67965408).

Almost surely, 2^676616565 is an apocalyptic number.

It is an amenable number.

676616565 is a deficient number, since it is larger than the sum of its proper divisors (410829963).

676616565 is a wasteful number, since it uses less digits than its factorization.

676616565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202508.

The product of its digits is 1360800, while the sum is 48.

The square root of 676616565 is about 26011.8543168302. The cubic root of 676616565 is about 877.9050394304.

The spelling of 676616565 in words is "six hundred seventy-six million, six hundred sixteen thousand, five hundred sixty-five".