64648807 has 4 divisors (see below), whose sum is σ = 68451696. Its totient is φ = 60845920.

The previous prime is 64648789. The next prime is 64648813. The reversal of 64648807 is 70884646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64648807 - 2⁷ = 64648679 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 (64648847) 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 3 ways as a sum of consecutive naturals, for example, 1901419 + ... + 1901452.

It is an arithmetic number, because the mean of its divisors is an integer number (17112924).

Almost surely, 2^64648807 is an apocalyptic number.

64648807 is a deficient number, since it is larger than the sum of its proper divisors (3802889).

64648807 is a wasteful number, since it uses less digits than its factorization.

64648807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802888.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 64648807 is about 8040.4481840256. The cubic root of 64648807 is about 401.3471391967.

The spelling of 64648807 in words is "sixty-four million, six hundred forty-eight thousand, eight hundred seven".