64504207 has 4 divisors (see below), whose sum is σ = 66728520. Its totient is φ = 62279896.

The previous prime is 64504147. The next prime is 64504249. The reversal of 64504207 is 70240546.

64504207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64504207 - 2¹⁵ = 64471439 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 (64504277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112113 + ... + 1112170.

It is an arithmetic number, because the mean of its divisors is an integer number (16682130).

Almost surely, 2^64504207 is an apocalyptic number.

64504207 is a deficient number, since it is larger than the sum of its proper divisors (2224313).

64504207 is a wasteful number, since it uses less digits than its factorization.

64504207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224312.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 64504207 is about 8031.4511142134. The cubic root of 64504207 is about 401.0476847459.

The spelling of 64504207 in words is "sixty-four million, five hundred four thousand, two hundred seven".