64884729 has 16 divisors (see below), whose sum is σ = 106477952. Its totient is φ = 34224768.

The previous prime is 64884727. The next prime is 64884731. The reversal of 64884729 is 92748846.

It is an interprime number because it is at equal distance from previous prime (64884727) and next prime (64884731).

It is not a de Polignac number, because 64884729 - 2¹ = 64884727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64884727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118564 + ... + 119109.

It is an arithmetic number, because the mean of its divisors is an integer number (6654872).

Almost surely, 2^64884729 is an apocalyptic number.

It is an amenable number.

64884729 is a deficient number, since it is larger than the sum of its proper divisors (41593223).

64884729 is a wasteful number, since it uses less digits than its factorization.

64884729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237696.

The product of its digits is 774144, while the sum is 48.

The square root of 64884729 is about 8055.1057721175. The cubic root of 64884729 is about 401.8347567186.

The spelling of 64884729 in words is "sixty-four million, eight hundred eighty-four thousand, seven hundred twenty-nine".