64858730 has 16 divisors (see below), whose sum is σ = 116847144. Its totient is φ = 25920960.

The previous prime is 64858721. The next prime is 64858733. The reversal of 64858730 is 3785846.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39828721 + 25030009 = 6311^2 + 5003^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64858733) 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, 14120 + ... + 18140.

Almost surely, 2^64858730 is an apocalyptic number.

64858730 is a deficient number, since it is larger than the sum of its proper divisors (51988414).

64858730 is a wasteful number, since it uses less digits than its factorization.

64858730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 64858730 is about 8053.4917892800. The cubic root of 64858730 is about 401.7810784613.

The spelling of 64858730 in words is "sixty-four million, eight hundred fifty-eight thousand, seven hundred thirty".