87070843 has 4 divisors (see below), whose sum is σ = 88546680. Its totient is φ = 85595008.

The previous prime is 87070831. The next prime is 87070849. The reversal of 87070843 is 34807078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34807078 = 2 ⋅17403539.

It is a cyclic number.

It is not a de Polignac number, because 87070843 - 2⁵ = 87070811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87070849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737830 + ... + 737947.

It is an arithmetic number, because the mean of its divisors is an integer number (22136670).

Almost surely, 2^87070843 is an apocalyptic number.

87070843 is a deficient number, since it is larger than the sum of its proper divisors (1475837).

87070843 is a wasteful number, since it uses less digits than its factorization.

87070843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475836.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 87070843 is about 9331.1758637376. The cubic root of 87070843 is about 443.2250010740.

The spelling of 87070843 in words is "eighty-seven million, seventy thousand, eight hundred forty-three".