676561545 has 32 divisors (see below), whose sum is σ = 1312122240. Its totient is φ = 328029120.

The previous prime is 676561499. The next prime is 676561547. The reversal of 676561545 is 545165676.

It is not a de Polignac number, because 676561545 - 2⁸ = 676561289 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 676561545.

It is not an unprimeable number, because it can be changed into a prime (676561547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226314 + ... + 229283.

It is an arithmetic number, because the mean of its divisors is an integer number (41003820).

Almost surely, 2^676561545 is an apocalyptic number.

It is an amenable number.

676561545 is a deficient number, since it is larger than the sum of its proper divisors (635560695).

676561545 is a wasteful number, since it uses less digits than its factorization.

676561545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455622 (or 455616 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 676561545 is about 26010.7967006011. The cubic root of 676561545 is about 877.8812427696.

The spelling of 676561545 in words is "six hundred seventy-six million, five hundred sixty-one thousand, five hundred forty-five".