64366729 has 8 divisors (see below), whose sum is σ = 73611648. Its totient is φ = 55134240.

The previous prime is 64366727. The next prime is 64366733. The reversal of 64366729 is 92766346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64366729 - 2¹ = 64366727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64366727) 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, 15204 + ... + 18970.

It is an arithmetic number, because the mean of its divisors is an integer number (9201456).

Almost surely, 2^64366729 is an apocalyptic number.

It is an amenable number.

64366729 is a deficient number, since it is larger than the sum of its proper divisors (9244919).

64366729 is a wasteful number, since it uses less digits than its factorization.

64366729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6215.

The product of its digits is 326592, while the sum is 43.

The square root of 64366729 is about 8022.8878217260. The cubic root of 64366729 is about 400.7625640663.

The spelling of 64366729 in words is "sixty-four million, three hundred sixty-six thousand, seven hundred twenty-nine".