670511 has 2 divisors, whose sum is σ = 670512. Its totient is φ = 670510.

The previous prime is 670507. The next prime is 670517. The reversal of 670511 is 115076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670511 - 2² = 670507 is a prime.

It is a super-2 number, since 2×670511² = 899170002242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335255 + 335256.

It is an arithmetic number, because the mean of its divisors is an integer number (335256).

2⁶⁷⁰⁵¹¹ is an apocalyptic number.

670511 is a deficient number, since it is larger than the sum of its proper divisors (1).

670511 is an equidigital number, since it uses as much as digits as its factorization.

670511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 670511 is about 818.8473606235. The cubic root of 670511 is about 87.5256414647.

Adding to 670511 its reverse (115076), we get a palindrome (785587).

The spelling of 670511 in words is "six hundred seventy thousand, five hundred eleven".