677964859009 has 4 divisors (see below), whose sum is σ = 680485174740. Its totient is φ = 675444543280.

The previous prime is 677964859003. The next prime is 677964859043. The reversal of 677964859009 is 900958469776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 354795348609 + 323169510400 = 595647^2 + 568480^2 .

It is a cyclic number.

It is not a de Polignac number, because 677964859009 - 2³³ = 669374924417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677964859003) 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, 1260157462 + ... + 1260157999.

It is an arithmetic number, because the mean of its divisors is an integer number (170121293685).

Almost surely, 2^677964859009 is an apocalyptic number.

It is an amenable number.

677964859009 is a deficient number, since it is larger than the sum of its proper divisors (2520315731).

677964859009 is a wasteful number, since it uses less digits than its factorization.

677964859009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520315730.

The product of its (nonzero) digits is 205752960, while the sum is 70.

The spelling of 677964859009 in words is "six hundred seventy-seven billion, nine hundred sixty-four million, eight hundred fifty-nine thousand, nine".