677926852349 has 4 divisors (see below), whose sum is σ = 677929256220. Its totient is φ = 677924448480.

The previous prime is 677926852301. The next prime is 677926852373. The reversal of 677926852349 is 943258629776.

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 130353492025 + 547573360324 = 361045^2 + 739982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677926852349 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 (677926852249) 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, 712472 + ... + 1365089.

It is an arithmetic number, because the mean of its divisors is an integer number (169482314055).

Almost surely, 2^677926852349 is an apocalyptic number.

It is an amenable number.

677926852349 is a deficient number, since it is larger than the sum of its proper divisors (2403871).

677926852349 is a wasteful number, since it uses less digits than its factorization.

677926852349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403870.

The product of its digits is 274337280, while the sum is 68.

The spelling of 677926852349 in words is "six hundred seventy-seven billion, nine hundred twenty-six million, eight hundred fifty-two thousand, three hundred forty-nine".