667351 has 2 divisors, whose sum is σ = 667352. Its totient is φ = 667350.

The previous prime is 667333. The next prime is 667361. The reversal of 667351 is 153766.

667351 = 331² + 332² + ... + 336².

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667351 - 2¹¹ = 665303 is a prime.

It is a super-3 number, since 3×667351³ = 891629033056333653, which contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333675 + 333676.

It is an arithmetic number, because the mean of its divisors is an integer number (333676).

2⁶⁶⁷³⁵¹ is an apocalyptic number.

667351 is a deficient number, since it is larger than the sum of its proper divisors (1).

667351 is an equidigital number, since it uses as much as digits as its factorization.

667351 is an evil number, because the sum of its binary digits is even.

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

The square root of 667351 is about 816.9155403100. The cubic root of 667351 is about 87.3879272633.

It can be divided in two parts, 6673 and 51, that added together give a square (6724 = 82²).

The spelling of 667351 in words is "six hundred sixty-seven thousand, three hundred fifty-one".