65854921 has 8 divisors (see below), whose sum is σ = 71985888. Its totient is φ = 59748000.

The previous prime is 65854909. The next prime is 65854963. The reversal of 65854921 is 12945856.

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

It is a cyclic number.

It is not a de Polignac number, because 65854921 - 2⁹ = 65854409 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65854721) 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, 15 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (8998236).

Almost surely, 2^65854921 is an apocalyptic number.

It is an amenable number.

65854921 is a deficient number, since it is larger than the sum of its proper divisors (6130967).

65854921 is a wasteful number, since it uses less digits than its factorization.

65854921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023.

The product of its digits is 86400, while the sum is 40.

The square root of 65854921 is about 8115.1044971707. The cubic root of 65854921 is about 403.8276741932.

The spelling of 65854921 in words is "sixty-five million, eight hundred fifty-four thousand, nine hundred twenty-one".