64930389 has 8 divisors (see below), whose sum is σ = 86883072. Its totient is φ = 43132320.

The previous prime is 64930381. The next prime is 64930417. The reversal of 64930389 is 98303946.

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

It is not a de Polignac number, because 64930389 - 2³ = 64930381 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64930389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64930381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37669 + ... + 39354.

It is an arithmetic number, because the mean of its divisors is an integer number (10860384).

Almost surely, 2^64930389 is an apocalyptic number.

It is an amenable number.

64930389 is a deficient number, since it is larger than the sum of its proper divisors (21952683).

64930389 is a wasteful number, since it uses less digits than its factorization.

64930389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77307.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 64930389 is about 8057.9395008898. The cubic root of 64930389 is about 401.9289929286.

The spelling of 64930389 in words is "sixty-four million, nine hundred thirty thousand, three hundred eighty-nine".