64289973 has 8 divisors (see below), whose sum is σ = 93512736. Its totient is φ = 38963600.

The previous prime is 64289957. The next prime is 64289983. The reversal of 64289973 is 37998246.

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 64289973 - 2⁴ = 64289957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64289983) 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, 974058 + ... + 974123.

It is an arithmetic number, because the mean of its divisors is an integer number (11689092).

Almost surely, 2^64289973 is an apocalyptic number.

It is an amenable number.

64289973 is a deficient number, since it is larger than the sum of its proper divisors (29222763).

64289973 is a wasteful number, since it uses less digits than its factorization.

64289973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948195.

The product of its digits is 653184, while the sum is 48.

The square root of 64289973 is about 8018.1028304706. The cubic root of 64289973 is about 400.6032003328.

The spelling of 64289973 in words is "sixty-four million, two hundred eighty-nine thousand, nine hundred seventy-three".