65860221 has 8 divisors (see below), whose sum is σ = 100358464. Its totient is φ = 37634400.

The previous prime is 65860217. The next prime is 65860229. The reversal of 65860221 is 12206856.

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

It is not a de Polignac number, because 65860221 - 2² = 65860217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65860229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568080 + ... + 1568121.

It is an arithmetic number, because the mean of its divisors is an integer number (12544808).

Almost surely, 2^65860221 is an apocalyptic number.

It is an amenable number.

65860221 is a deficient number, since it is larger than the sum of its proper divisors (34498243).

65860221 is a wasteful number, since it uses less digits than its factorization.

65860221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136211.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 65860221 is about 8115.4310421567. The cubic root of 65860221 is about 403.8385072447.

The spelling of 65860221 in words is "sixty-five million, eight hundred sixty thousand, two hundred twenty-one".