670543543 has 4 divisors (see below), whose sum is σ = 675662328. Its totient is φ = 665424760.

The previous prime is 670543519. The next prime is 670543553. The reversal of 670543543 is 345345076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670543543 - 2¹⁷ = 670412471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670543553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559196 + ... + 2559457.

It is an arithmetic number, because the mean of its divisors is an integer number (168915582).

Almost surely, 2^670543543 is an apocalyptic number.

670543543 is a deficient number, since it is larger than the sum of its proper divisors (5118785).

670543543 is a wasteful number, since it uses less digits than its factorization.

670543543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118784.

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 670543543 is about 25894.8555315530. The cubic root of 670543543 is about 875.2705744990.

The spelling of 670543543 in words is "six hundred seventy million, five hundred forty-three thousand, five hundred forty-three".