64729049 has 12 divisors (see below), whose sum is σ = 82142928. Its totient is φ = 50437800.

The previous prime is 64729043. The next prime is 64729069. The reversal of 64729049 is 94092746.

It is not a de Polignac number, because 64729049 - 2⁸ = 64728793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64728997 and 64729015.

It is not an unprimeable number, because it can be changed into a prime (64729043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59507 + ... + 60584.

It is an arithmetic number, because the mean of its divisors is an integer number (6845244).

Almost surely, 2^64729049 is an apocalyptic number.

It is an amenable number.

64729049 is a deficient number, since it is larger than the sum of its proper divisors (17413879).

64729049 is a wasteful number, since it uses less digits than its factorization.

64729049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120116 (or 120109 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 64729049 is about 8045.4365325941. The cubic root of 64729049 is about 401.5131210278.

The spelling of 64729049 in words is "sixty-four million, seven hundred twenty-nine thousand, forty-nine".