866062421 has 8 divisors (see below), whose sum is σ = 1001711424. Its totient is φ = 733394880.

The previous prime is 866062391. The next prime is 866062423. The reversal of 866062421 is 124260668.

866062421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 866062421 - 2¹⁰ = 866061397 is a prime.

It is a super-3 number, since 3×866062421³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866062423) 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, 744740 + ... + 745901.

It is an arithmetic number, because the mean of its divisors is an integer number (125213928).

Almost surely, 2^866062421 is an apocalyptic number.

It is an amenable number.

866062421 is a deficient number, since it is larger than the sum of its proper divisors (135649003).

866062421 is a wasteful number, since it uses less digits than its factorization.

866062421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490731.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 866062421 is about 29428.9384959771. The cubic root of 866062421 is about 953.1978737093.

The spelling of 866062421 in words is "eight hundred sixty-six million, sixty-two thousand, four hundred twenty-one".