64500765 has 16 divisors (see below), whose sum is σ = 117944448. Its totient is φ = 29486016.

The previous prime is 64500757. The next prime is 64500767. The reversal of 64500765 is 56700546.

64500765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64500765 - 2³ = 64500757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64500767) 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 15 ways as a sum of consecutive naturals, for example, 307042 + ... + 307251.

It is an arithmetic number, because the mean of its divisors is an integer number (7371528).

Almost surely, 2^64500765 is an apocalyptic number.

It is an amenable number.

64500765 is a deficient number, since it is larger than the sum of its proper divisors (53443683).

64500765 is a wasteful number, since it uses less digits than its factorization.

64500765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614308.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 64500765 is about 8031.2368287830. The cubic root of 64500765 is about 401.0405512025.

The spelling of 64500765 in words is "sixty-four million, five hundred thousand, seven hundred sixty-five".