64806065 has 16 divisors (see below), whose sum is σ = 81883008. Its totient is φ = 49142016.

The previous prime is 64806061. The next prime is 64806083. The reversal of 64806065 is 56060846.

It is a cyclic number.

It is not a de Polignac number, because 64806065 - 2² = 64806061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64806061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10502 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (5117688).

Almost surely, 2^64806065 is an apocalyptic number.

It is an amenable number.

64806065 is a deficient number, since it is larger than the sum of its proper divisors (17076943).

64806065 is a wasteful number, since it uses less digits than its factorization.

64806065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 64806065 is about 8050.2214255261. The cubic root of 64806065 is about 401.6723008647.

The spelling of 64806065 in words is "sixty-four million, eight hundred six thousand, sixty-five".