64294729 has 4 divisors (see below), whose sum is σ = 67090176. Its totient is φ = 61499284.

The previous prime is 64294721. The next prime is 64294751. The reversal of 64294729 is 92749246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64294729 - 2³ = 64294721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64294721) 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, 1397689 + ... + 1397734.

It is an arithmetic number, because the mean of its divisors is an integer number (16772544).

Almost surely, 2^64294729 is an apocalyptic number.

It is an amenable number.

64294729 is a deficient number, since it is larger than the sum of its proper divisors (2795447).

64294729 is a wasteful number, since it uses less digits than its factorization.

64294729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795446.

The product of its digits is 217728, while the sum is 43.

The square root of 64294729 is about 8018.3994038711. The cubic root of 64294729 is about 400.6130786065.

The spelling of 64294729 in words is "sixty-four million, two hundred ninety-four thousand, seven hundred twenty-nine".