523985677 has 4 divisors (see below), whose sum is σ = 529173756. Its totient is φ = 518797600.

The previous prime is 523985647. The next prime is 523985711. The reversal of 523985677 is 776589325.

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 300363561 + 223622116 = 17331^2 + 14954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523985677 is a prime.

It is a super-2 number, since 2×523985677² = 549121979402296658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523985647) 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, 2593888 + ... + 2594089.

It is an arithmetic number, because the mean of its divisors is an integer number (132293439).

Almost surely, 2^523985677 is an apocalyptic number.

It is an amenable number.

523985677 is a deficient number, since it is larger than the sum of its proper divisors (5188079).

523985677 is a wasteful number, since it uses less digits than its factorization.

523985677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188078.

The product of its digits is 3175200, while the sum is 52.

The square root of 523985677 is about 22890.7334308012. The cubic root of 523985677 is about 806.1944522594.

The spelling of 523985677 in words is "five hundred twenty-three million, nine hundred eighty-five thousand, six hundred seventy-seven".