64433065 has 8 divisors (see below), whose sum is σ = 77370120. Its totient is φ = 51512832.

The previous prime is 64433053. The next prime is 64433071. The reversal of 64433065 is 56033446.

It can be written as a sum of positive squares in 4 ways, for example, as 1373584 + 63059481 = 1172^2 + 7941^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64433065 - 2⁷ = 64432937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6891 + ... + 13279.

It is an arithmetic number, because the mean of its divisors is an integer number (9671265).

Almost surely, 2^64433065 is an apocalyptic number.

It is an amenable number.

64433065 is a deficient number, since it is larger than the sum of its proper divisors (12937055).

64433065 is a wasteful number, since it uses less digits than its factorization.

64433065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 64433065 is about 8027.0209293361. The cubic root of 64433065 is about 400.9001913690.

The spelling of 64433065 in words is "sixty-four million, four hundred thirty-three thousand, sixty-five".