667357 has 6 divisors (see below), whose sum is σ = 685754. Its totient is φ = 649440.

The previous prime is 667351. The next prime is 667361. The reversal of 667357 is 753766.

It can be written as a sum of positive squares in 3 ways, for example, as 4761 + 662596 = 69^2 + 814^2 .

It is not a de Polignac number, because 667357 - 2⁷ = 667229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1483 + ... + 1879.

2⁶⁶⁷³⁵⁷ is an apocalyptic number.

It is an amenable number.

667357 is a deficient number, since it is larger than the sum of its proper divisors (18397).

667357 is an equidigital number, since it uses as much as digits as its factorization.

667357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 438 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 667357 is about 816.9192126520. The cubic root of 667357 is about 87.3881891575.

It can be divided in two parts, 667 and 357, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 667357 in words is "six hundred sixty-seven thousand, three hundred fifty-seven".