64945283 has 8 divisors (see below), whose sum is σ = 70663488. Its totient is φ = 59330304.

The previous prime is 64945277. The next prime is 64945291. The reversal of 64945283 is 38254946.

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 64945283 - 2⁴ = 64945267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64945283.

It is not an unprimeable number, because it can be changed into a prime (64945273) 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 7 ways as a sum of consecutive naturals, for example, 24491 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (8832936).

Almost surely, 2^64945283 is an apocalyptic number.

64945283 is a deficient number, since it is larger than the sum of its proper divisors (5718205).

64945283 is a wasteful number, since it uses less digits than its factorization.

64945283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51613.

The product of its digits is 207360, while the sum is 41.

The square root of 64945283 is about 8058.8636295696. The cubic root of 64945283 is about 401.9597226216.

The spelling of 64945283 in words is "sixty-four million, nine hundred forty-five thousand, two hundred eighty-three".