65616347 has 4 divisors (see below), whose sum is σ = 65888856. Its totient is φ = 65343840.

The previous prime is 65616337. The next prime is 65616349. The reversal of 65616347 is 74361656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65616347 - 2¹⁸ = 65354203 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65616347.

It is not an unprimeable number, because it can be changed into a prime (65616349) 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, 135893 + ... + 136374.

It is an arithmetic number, because the mean of its divisors is an integer number (16472214).

Almost surely, 2^65616347 is an apocalyptic number.

65616347 is a deficient number, since it is larger than the sum of its proper divisors (272509).

65616347 is a wasteful number, since it uses less digits than its factorization.

65616347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272508.

The product of its digits is 90720, while the sum is 38.

The square root of 65616347 is about 8100.3917806486. The cubic root of 65616347 is about 403.3394324754.

The spelling of 65616347 in words is "sixty-five million, six hundred sixteen thousand, three hundred forty-seven".