64906320 has 40 divisors (see below), whose sum is σ = 201210336. Its totient is φ = 17308288.

The previous prime is 64906301. The next prime is 64906327. The reversal of 64906320 is 2360946.

64906320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64906327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134982 + ... + 135461.

Almost surely, 2^64906320 is an apocalyptic number.

64906320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64906320 is an abundant number, since it is smaller than the sum of its proper divisors (136304016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64906320 is a wasteful number, since it uses less digits than its factorization.

64906320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270459 (or 270453 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 64906320 is about 8056.4458665096. The cubic root of 64906320 is about 401.8793231993.

The spelling of 64906320 in words is "sixty-four million, nine hundred six thousand, three hundred twenty".