64452779 has 8 divisors (see below), whose sum is σ = 67810848. Its totient is φ = 61179840.

The previous prime is 64452733. The next prime is 64452809. The reversal of 64452779 is 97725446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64452779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64452719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19727 + ... + 22760.

It is an arithmetic number, because the mean of its divisors is an integer number (8476356).

Almost surely, 2^64452779 is an apocalyptic number.

64452779 is a deficient number, since it is larger than the sum of its proper divisors (3358069).

64452779 is a wasteful number, since it uses less digits than its factorization.

64452779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42565.

The product of its digits is 423360, while the sum is 44.

The square root of 64452779 is about 8028.2488127860. The cubic root of 64452779 is about 400.9410737973.

The spelling of 64452779 in words is "sixty-four million, four hundred fifty-two thousand, seven hundred seventy-nine".