8070870021 has 8 divisors (see below), whose sum is σ = 10825598784. Its totient is φ = 5348360640.

The previous prime is 8070870001. The next prime is 8070870023. The reversal of 8070870021 is 1200780708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8070870021 - 2¹⁸ = 8070607877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8070870023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8054260 + ... + 8055261.

It is an arithmetic number, because the mean of its divisors is an integer number (1353199848).

Almost surely, 2^8070870021 is an apocalyptic number.

It is an amenable number.

8070870021 is a deficient number, since it is larger than the sum of its proper divisors (2754728763).

8070870021 is a wasteful number, since it uses less digits than its factorization.

8070870021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16109691.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 8070870021 is about 89838.0210211690. The cubic root of 8070870021 is about 2005.8884809644. Note that the first 3 decimals are identical.

The spelling of 8070870021 in words is "eight billion, seventy million, eight hundred seventy thousand, twenty-one".