65001616 has 20 divisors (see below), whose sum is σ = 127460592. Its totient is φ = 32108576.

The previous prime is 65001613. The next prime is 65001619. The reversal of 65001616 is 61610056.

It is an interprime number because it is at equal distance from previous prime (65001613) and next prime (65001619).

It is a super-2 number, since 2×65001616² = 8450420165222912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65001613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23146 + ... + 25801.

Almost surely, 2^65001616 is an apocalyptic number.

It is an amenable number.

65001616 is a deficient number, since it is larger than the sum of its proper divisors (62458976).

65001616 is a wasteful number, since it uses less digits than its factorization.

65001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49038 (or 49032 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 65001616 is about 8062.3579677412. The cubic root of 65001616 is about 402.0759078789.

The spelling of 65001616 in words is "sixty-five million, one thousand, six hundred sixteen".