667513 has 8 divisors (see below), whose sum is σ = 832320. Its totient is φ = 520080.

The previous prime is 667507. The next prime is 667519. The reversal of 667513 is 315766.

It is an interprime number because it is at equal distance from previous prime (667507) and next prime (667519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667513 - 2¹⁷ = 536441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4258 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (104040).

2⁶⁶⁷⁵¹³ is an apocalyptic number.

It is an amenable number.

667513 is a deficient number, since it is larger than the sum of its proper divisors (164807).

667513 is a wasteful number, since it uses less digits than its factorization.

667513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8687.

The product of its digits is 3780, while the sum is 28.

The square root of 667513 is about 817.0146877505. The cubic root of 667513 is about 87.3949978548.

The spelling of 667513 in words is "six hundred sixty-seven thousand, five hundred thirteen".