677833945 has 16 divisors (see below), whose sum is σ = 862719120. Its totient is φ = 509497344.

The previous prime is 677833921. The next prime is 677833951. The reversal of 677833945 is 549338776.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 127509264 + 550324681 = 11292^2 + 23459^2 .

It is a de Polignac number, because none of the positive numbers 2^k-677833945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 677833892 and 677833901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45601 + ... + 58609.

It is an arithmetic number, because the mean of its divisors is an integer number (53919945).

Almost surely, 2^677833945 is an apocalyptic number.

It is an amenable number.

677833945 is a deficient number, since it is larger than the sum of its proper divisors (184885175).

677833945 is a wasteful number, since it uses less digits than its factorization.

677833945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644.

The product of its digits is 3810240, while the sum is 52.

The square root of 677833945 is about 26035.2442853913. The cubic root of 677833945 is about 878.4312378538.

The spelling of 677833945 in words is "six hundred seventy-seven million, eight hundred thirty-three thousand, nine hundred forty-five".