860216421 has 8 divisors (see below), whose sum is σ = 1147116960. Its totient is φ = 573396752.

The previous prime is 860216351. The next prime is 860216443. The reversal of 860216421 is 124612068.

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

It is a cyclic number.

It is not a de Polignac number, because 860216421 - 2¹⁷ = 860085349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860216471) 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, 11890 + ... + 43148.

It is an arithmetic number, because the mean of its divisors is an integer number (143389620).

Almost surely, 2^860216421 is an apocalyptic number.

It is an amenable number.

860216421 is a deficient number, since it is larger than the sum of its proper divisors (286900539).

860216421 is a wasteful number, since it uses less digits than its factorization.

860216421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40435.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 860216421 is about 29329.4463125372. The cubic root of 860216421 is about 951.0483057635.

Adding to 860216421 its reverse (124612068), we get a palindrome (984828489).

The spelling of 860216421 in words is "eight hundred sixty million, two hundred sixteen thousand, four hundred twenty-one".