677744345 has 32 divisors (see below), whose sum is σ = 878688000. Its totient is φ = 500290560.

The previous prime is 677744341. The next prime is 677744363. The reversal of 677744345 is 543447776.

677744345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 677744345 - 2² = 677744341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 677744345.

It is not an unprimeable number, because it can be changed into a prime (677744341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 599741 + ... + 600869.

It is an arithmetic number, because the mean of its divisors is an integer number (27459000).

Almost surely, 2^677744345 is an apocalyptic number.

It is an amenable number.

677744345 is a deficient number, since it is larger than the sum of its proper divisors (200943655).

677744345 is a wasteful number, since it uses less digits than its factorization.

677744345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313.

The product of its digits is 1975680, while the sum is 47.

The square root of 677744345 is about 26033.5234841540. The cubic root of 677744345 is about 878.3925307793.

The spelling of 677744345 in words is "six hundred seventy-seven million, seven hundred forty-four thousand, three hundred forty-five".