677641073 has 4 divisors (see below), whose sum is σ = 679779060. Its totient is φ = 675503088.

The previous prime is 677641049. The next prime is 677641087. The reversal of 677641073 is 370146776.

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 412211809 + 265429264 = 20303^2 + 16292^2 .

It is a cyclic number.

It is not a de Polignac number, because 677641073 - 2¹⁰ = 677640049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677641073.

It is not an unprimeable number, because it can be changed into a prime (677641033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068518 + ... + 1069151.

It is an arithmetic number, because the mean of its divisors is an integer number (169944765).

Almost surely, 2^677641073 is an apocalyptic number.

It is an amenable number.

677641073 is a deficient number, since it is larger than the sum of its proper divisors (2137987).

677641073 is a wasteful number, since it uses less digits than its factorization.

677641073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137986.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 677641073 is about 26031.5399659720. The cubic root of 677641073 is about 878.3479131876.

The spelling of 677641073 in words is "six hundred seventy-seven million, six hundred forty-one thousand, seventy-three".