667048559 has 4 divisors (see below), whose sum is σ = 667831416. Its totient is φ = 666265704.

The previous prime is 667048537. The next prime is 667048643. The reversal of 667048559 is 955840766.

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 667048559 - 2⁸ = 667048303 is a prime.

It is a super-3 number, since 3×667048559³ (a number of 27 digits) contains 333 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 (667048259) 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, 390149 + ... + 391854.

It is an arithmetic number, because the mean of its divisors is an integer number (166957854).

Almost surely, 2^667048559 is an apocalyptic number.

667048559 is a deficient number, since it is larger than the sum of its proper divisors (782857).

667048559 is an equidigital number, since it uses as much as digits as its factorization.

667048559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782856.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 667048559 is about 25827.2832291745. The cubic root of 667048559 is about 873.7472397363.

The spelling of 667048559 in words is "six hundred sixty-seven million, forty-eight thousand, five hundred fifty-nine".