65605997892698 has 8 divisors (see below), whose sum is σ = 98409636689760. Its totient is φ = 32802785662780.

The previous prime is 65605997892691. The next prime is 65605997892703. The reversal of 65605997892698 is 89629879950656.

65605997892698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×65605997892698³ (a number of 42 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65605997892691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106257008 + ... + 106872651.

It is an arithmetic number, because the mean of its divisors is an integer number (12301204586220).

Almost surely, 2^{65605997892698} is an apocalyptic number.

65605997892698 is a deficient number, since it is larger than the sum of its proper divisors (32803638797062).

65605997892698 is a wasteful number, since it uses less digits than its factorization.

65605997892698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213283572.

The product of its (nonzero) digits is 31744742400, while the sum is 89.

The spelling of 65605997892698 in words is "sixty-five trillion, six hundred five billion, nine hundred ninety-seven million, eight hundred ninety-two thousand, six hundred ninety-eight".