64705230 has 160 divisors (see below), whose sum is σ = 190688256. Its totient is φ = 15676416.

The previous prime is 64705189. The next prime is 64705231. The reversal of 64705230 is 3250746.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 64705194 and 64705203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64705231) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 509427 + ... + 509553.

Almost surely, 2^64705230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64705230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95344128).

64705230 is an abundant number, since it is smaller than the sum of its proper divisors (125983026).

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

64705230 is a wasteful number, since it uses less digits than its factorization.

64705230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 64705230 is about 8043.9561162403. The cubic root of 64705230 is about 401.4638653768.

Adding to 64705230 its reverse (3250746), we get a palindrome (67955976).

The spelling of 64705230 in words is "sixty-four million, seven hundred five thousand, two hundred thirty".