523087667 has 4 divisors (see below), whose sum is σ = 523592160. Its totient is φ = 522583176.

The previous prime is 523087661. The next prime is 523087681. The reversal of 523087667 is 766780325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523087667 - 2¹⁰ = 523086643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523087661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250688 + ... + 252765.

It is an arithmetic number, because the mean of its divisors is an integer number (130898040).

Almost surely, 2^523087667 is an apocalyptic number.

523087667 is a deficient number, since it is larger than the sum of its proper divisors (504493).

523087667 is a wasteful number, since it uses less digits than its factorization.

523087667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504492.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 523087667 is about 22871.1098768731. The cubic root of 523087667 is about 805.7336351748.

The spelling of 523087667 in words is "five hundred twenty-three million, eighty-seven thousand, six hundred sixty-seven".