64665080 has 16 divisors (see below), whose sum is σ = 145496520. Its totient is φ = 25866016.

The previous prime is 64665071. The next prime is 64665089. The reversal of 64665080 is 8056646.

It is an interprime number because it is at equal distance from previous prime (64665071) and next prime (64665089).

It is a self number, because there is not a number n which added to its sum of digits gives 64665080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64665089) 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, 808274 + ... + 808353.

Almost surely, 2^64665080 is an apocalyptic number.

It is an amenable number.

64665080 is an abundant number, since it is smaller than the sum of its proper divisors (80831440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64665080 is a wasteful number, since it uses less digits than its factorization.

64665080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616638 (or 1616634 counting only the distinct ones).

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

The square root of 64665080 is about 8041.4600664307. The cubic root of 64665080 is about 401.3808112493.

The spelling of 64665080 in words is "sixty-four million, six hundred sixty-five thousand, eighty".