70840543 has 2 divisors, whose sum is σ = 70840544. Its totient is φ = 70840542.

The previous prime is 70840541. The next prime is 70840577. The reversal of 70840543 is 34504807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70840543 - 2¹ = 70840541 is a prime.

Together with 70840541, 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 (70840541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35420271 + 35420272.

It is an arithmetic number, because the mean of its divisors is an integer number (35420272).

Almost surely, 2^70840543 is an apocalyptic number.

70840543 is a deficient number, since it is larger than the sum of its proper divisors (1).

70840543 is an equidigital number, since it uses as much as digits as its factorization.

70840543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 70840543 is about 8416.6824224275. The cubic root of 70840543 is about 413.7715508592.

The spelling of 70840543 in words is "seventy million, eight hundred forty thousand, five hundred forty-three".