64906843 has 16 divisors (see below), whose sum is σ = 69521760. Its totient is φ = 60480000.

The previous prime is 64906837. The next prime is 64906847. The reversal of 64906843 is 34860946.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64906843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64906796 and 64906805.

It is not an unprimeable number, because it can be changed into a prime (64906847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258468 + ... + 258718.

It is an arithmetic number, because the mean of its divisors is an integer number (4345110).

Almost surely, 2^64906843 is an apocalyptic number.

64906843 is a deficient number, since it is larger than the sum of its proper divisors (4614917).

64906843 is a wasteful number, since it uses less digits than its factorization.

64906843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 64906843 is about 8056.4783249258. The cubic root of 64906843 is about 401.8804026131.

The spelling of 64906843 in words is "sixty-four million, nine hundred six thousand, eight hundred forty-three".