670279669 has 2 divisors, whose sum is σ = 670279670. Its totient is φ = 670279668.

The previous prime is 670279667. The next prime is 670279681. The reversal of 670279669 is 966972076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544615569 + 125664100 = 23337^2 + 11210^2 .

It is a cyclic number.

It is not a de Polignac number, because 670279669 - 2¹ = 670279667 is a prime.

It is a super-2 number, since 2×670279669² = 898549669349499122, which contains 22 as substring.

Together with 670279667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670279661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335139834 + 335139835.

It is an arithmetic number, because the mean of its divisors is an integer number (335139835).

Almost surely, 2^670279669 is an apocalyptic number.

It is an amenable number.

670279669 is a deficient number, since it is larger than the sum of its proper divisors (1).

670279669 is an equidigital number, since it uses as much as digits as its factorization.

670279669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 670279669 is about 25889.7599254995. The cubic root of 670279669 is about 875.1557465346.

The spelling of 670279669 in words is "six hundred seventy million, two hundred seventy-nine thousand, six hundred sixty-nine".