667676573 has 4 divisors (see below), whose sum is σ = 667742400. Its totient is φ = 667610748.

The previous prime is 667676539. The next prime is 667676579. The reversal of 667676573 is 375676766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 667676573 - 2¹² = 667672477 is a prime.

It is a super-2 number, since 2×667676573² = 891584012266048658, 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 (667676579) 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, 14123 + ... + 39176.

It is an arithmetic number, because the mean of its divisors is an integer number (166935600).

Almost surely, 2^667676573 is an apocalyptic number.

It is an amenable number.

667676573 is a deficient number, since it is larger than the sum of its proper divisors (65827).

667676573 is a wasteful number, since it uses less digits than its factorization.

667676573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65826.

The product of its digits is 6667920, while the sum is 53.

The square root of 667676573 is about 25839.4383259389. The cubic root of 667676573 is about 874.0213594020.

The spelling of 667676573 in words is "six hundred sixty-seven million, six hundred seventy-six thousand, five hundred seventy-three".