670543519 has 2 divisors, whose sum is σ = 670543520. Its totient is φ = 670543518.

The previous prime is 670543499. The next prime is 670543553. The reversal of 670543519 is 915345076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670543519 - 2²¹ = 668446367 is a prime.

It is a super-3 number, since 3×670543519³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670543579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335271759 + 335271760.

It is an arithmetic number, because the mean of its divisors is an integer number (335271760).

Almost surely, 2^670543519 is an apocalyptic number.

670543519 is a deficient number, since it is larger than the sum of its proper divisors (1).

670543519 is an equidigital number, since it uses as much as digits as its factorization.

670543519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 670543519 is about 25894.8550681405. The cubic root of 670543519 is about 875.2705640565.

The spelling of 670543519 in words is "six hundred seventy million, five hundred forty-three thousand, five hundred nineteen".