65016664 has 8 divisors (see below), whose sum is σ = 121906260. Its totient is φ = 32508328.

The previous prime is 65016661. The next prime is 65016671. The reversal of 65016664 is 46661056.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65016661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4063534 + ... + 4063549.

Almost surely, 2^65016664 is an apocalyptic number.

It is an amenable number.

65016664 is a deficient number, since it is larger than the sum of its proper divisors (56889596).

65016664 is a wasteful number, since it uses less digits than its factorization.

65016664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127089 (or 8127085 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 65016664 is about 8063.2911394790. The cubic root of 65016664 is about 402.1069326021.

The spelling of 65016664 in words is "sixty-five million, sixteen thousand, six hundred sixty-four".