8406431065 has 16 divisors (see below), whose sum is σ = 10687023360. Its totient is φ = 6326045440.

The previous prime is 8406431039. The next prime is 8406431087. The reversal of 8406431065 is 5601346048.

It is a happy number.

It is not a de Polignac number, because 8406431065 - 2⁷ = 8406430937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132606 + ... + 185464.

It is an arithmetic number, because the mean of its divisors is an integer number (667938960).

Almost surely, 2^8406431065 is an apocalyptic number.

8406431065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8406431065 is a deficient number, since it is larger than the sum of its proper divisors (2280592295).

8406431065 is a wasteful number, since it uses less digits than its factorization.

8406431065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54752.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 8406431065 is about 91686.5915224249. The cubic root of 8406431065 is about 2033.3113520124.

The spelling of 8406431065 in words is "eight billion, four hundred six million, four hundred thirty-one thousand, sixty-five".