670919 has 2 divisors, whose sum is σ = 670920. Its totient is φ = 670918.

The previous prime is 670903. The next prime is 670931. The reversal of 670919 is 919076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670919 - 2⁴ = 670903 is a prime.

It is a super-2 number, since 2×670919² = 900264609122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335459 + 335460.

It is an arithmetic number, because the mean of its divisors is an integer number (335460).

2⁶⁷⁰⁹¹⁹ is an apocalyptic number.

670919 is a deficient number, since it is larger than the sum of its proper divisors (1).

670919 is an equidigital number, since it uses as much as digits as its factorization.

670919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 670919 is about 819.0964534168. The cubic root of 670919 is about 87.5433907241.

The spelling of 670919 in words is "six hundred seventy thousand, nine hundred nineteen".