65989401 has 8 divisors (see below), whose sum is σ = 88764960. Its totient is φ = 43603392.

The previous prime is 65989397. The next prime is 65989403. The reversal of 65989401 is 10498956.

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

It is not a de Polignac number, because 65989401 - 2² = 65989397 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65989403) 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 7 ways as a sum of consecutive naturals, for example, 96991 + ... + 97668.

It is an arithmetic number, because the mean of its divisors is an integer number (11095620).

Almost surely, 2^65989401 is an apocalyptic number.

It is an amenable number.

65989401 is a deficient number, since it is larger than the sum of its proper divisors (22775559).

65989401 is a wasteful number, since it uses less digits than its factorization.

65989401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194775.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 65989401 is about 8123.3860550881. The cubic root of 65989401 is about 404.1023680238.

The spelling of 65989401 in words is "sixty-five million, nine hundred eighty-nine thousand, four hundred one".