64730384 has 20 divisors (see below), whose sum is σ = 127783116. Its totient is φ = 31754112.

The previous prime is 64730381. The next prime is 64730389. The reversal of 64730384 is 48303746.

It can be written as a sum of positive squares in 2 ways, for example, as 30250000 + 34480384 = 5500^2 + 5872^2 .

It is a super-2 number, since 2×64730384² = 8380045225574912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64730381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37319 + ... + 39014.

Almost surely, 2^64730384 is an apocalyptic number.

It is an amenable number.

64730384 is a deficient number, since it is larger than the sum of its proper divisors (63052732).

64730384 is a wasteful number, since it uses less digits than its factorization.

64730384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76394 (or 76388 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 64730384 is about 8045.5194984538. The cubic root of 64730384 is about 401.5158813358.

The spelling of 64730384 in words is "sixty-four million, seven hundred thirty thousand, three hundred eighty-four".