8420535065 has 8 divisors (see below), whose sum is σ = 10111392000. Its totient is φ = 6731928112.

The previous prime is 8420535059. The next prime is 8420535131. The reversal of 8420535065 is 5605350248.

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 8420535065 - 2¹² = 8420530969 is a prime.

It is a super-3 number, since 3×8420535065³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554249 + ... + 569238.

It is an arithmetic number, because the mean of its divisors is an integer number (1263924000).

Almost surely, 2^8420535065 is an apocalyptic number.

It is an amenable number.

8420535065 is a deficient number, since it is larger than the sum of its proper divisors (1690856935).

8420535065 is a wasteful number, since it uses less digits than its factorization.

8420535065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124991.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 8420535065 is about 91763.4734793752. The cubic root of 8420535065 is about 2034.4478549199.

The spelling of 8420535065 in words is "eight billion, four hundred twenty million, five hundred thirty-five thousand, sixty-five".