64398843 has 12 divisors (see below), whose sum is σ = 93646800. Its totient is φ = 42643536.

The previous prime is 64398797. The next prime is 64398853. The reversal of 64398843 is 34889346.

It is not a de Polignac number, because 64398843 - 2¹⁴ = 64382459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64398853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22671 + ... + 25352.

It is an arithmetic number, because the mean of its divisors is an integer number (7803900).

Almost surely, 2^64398843 is an apocalyptic number.

64398843 is a deficient number, since it is larger than the sum of its proper divisors (29247957).

64398843 is a wasteful number, since it uses less digits than its factorization.

64398843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48178 (or 48175 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 64398843 is about 8024.8889711946. Note that the first 3 decimals coincide. The cubic root of 64398843 is about 400.8292027857.

The spelling of 64398843 in words is "sixty-four million, three hundred ninety-eight thousand, eight hundred forty-three".