64064749 has 8 divisors (see below), whose sum is σ = 73450368. Its totient is φ = 54737520.

The previous prime is 64064731. The next prime is 64064761. The reversal of 64064749 is 94746046.

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

It is a cyclic number.

It is not a de Polignac number, because 64064749 - 2¹¹ = 64062701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064549) 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, 12217 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (9181296).

Almost surely, 2^64064749 is an apocalyptic number.

It is an amenable number.

64064749 is a deficient number, since it is larger than the sum of its proper divisors (9385619).

64064749 is a wasteful number, since it uses less digits than its factorization.

64064749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29195.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 64064749 is about 8004.0457894742. The cubic root of 64064749 is about 400.1348482847.

The spelling of 64064749 in words is "sixty-four million, sixty-four thousand, seven hundred forty-nine".