676547257 has 4 divisors (see below), whose sum is σ = 694832356. Its totient is φ = 658262160.

The previous prime is 676547219. The next prime is 676547299. The reversal of 676547257 is 752745676.

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 353590416 + 322956841 = 18804^2 + 17971^2 .

It is a cyclic number.

It is not a de Polignac number, because 676547257 - 2²³ = 668158649 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 676547257.

It is not an unprimeable number, because it can be changed into a prime (676547057) 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, 9142494 + ... + 9142567.

It is an arithmetic number, because the mean of its divisors is an integer number (173708089).

Almost surely, 2^676547257 is an apocalyptic number.

It is an amenable number.

676547257 is a deficient number, since it is larger than the sum of its proper divisors (18285099).

676547257 is a wasteful number, since it uses less digits than its factorization.

676547257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285098.

The product of its digits is 2469600, while the sum is 49.

The square root of 676547257 is about 26010.5220439729. The cubic root of 676547257 is about 877.8750628660.

The spelling of 676547257 in words is "six hundred seventy-six million, five hundred forty-seven thousand, two hundred fifty-seven".