64055730 has 16 divisors (see below), whose sum is σ = 153733824. Its totient is φ = 17081520.

The previous prime is 64055723. The next prime is 64055731. The reversal of 64055730 is 3755046.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2135191 = 64055730 / (6 + 4 + 0 + 5 + 5 + 7 + 3 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64055731) 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, 1067566 + ... + 1067625.

It is an arithmetic number, because the mean of its divisors is an integer number (9608364).

Almost surely, 2^64055730 is an apocalyptic number.

64055730 is an abundant number, since it is smaller than the sum of its proper divisors (89678094).

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

64055730 is a wasteful number, since it uses less digits than its factorization.

64055730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135201.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 64055730 is about 8003.4823670700. The cubic root of 64055730 is about 400.1160704825.

The spelling of 64055730 in words is "sixty-four million, fifty-five thousand, seven hundred thirty".