64472789 has 8 divisors (see below), whose sum is σ = 68335488. Its totient is φ = 60617920.

The previous prime is 64472783. The next prime is 64472803. The reversal of 64472789 is 98727446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64472789 - 2⁸ = 64472533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64472783) 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, 30794 + ... + 32820.

It is an arithmetic number, because the mean of its divisors is an integer number (8541936).

Almost surely, 2^64472789 is an apocalyptic number.

It is an amenable number.

64472789 is a deficient number, since it is larger than the sum of its proper divisors (3862699).

64472789 is a wasteful number, since it uses less digits than its factorization.

64472789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915.

The product of its digits is 677376, while the sum is 47.

The square root of 64472789 is about 8029.4949405302. The cubic root of 64472789 is about 400.9825615392.

The spelling of 64472789 in words is "sixty-four million, four hundred seventy-two thousand, seven hundred eighty-nine".