65354921 has 2 divisors, whose sum is σ = 65354922. Its totient is φ = 65354920.

The previous prime is 65354867. The next prime is 65354923. The reversal of 65354921 is 12945356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37687321 + 27667600 = 6139^2 + 5260^2 .

It is a cyclic number.

It is not a de Polignac number, because 65354921 - 2⁶ = 65354857 is a prime.

Together with 65354923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65354923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32677460 + 32677461.

It is an arithmetic number, because the mean of its divisors is an integer number (32677461).

Almost surely, 2^65354921 is an apocalyptic number.

It is an amenable number.

65354921 is a deficient number, since it is larger than the sum of its proper divisors (1).

65354921 is an equidigital number, since it uses as much as digits as its factorization.

65354921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 65354921 is about 8084.2390489149. The cubic root of 65354921 is about 402.8030632902.

The spelling of 65354921 in words is "sixty-five million, three hundred fifty-four thousand, nine hundred twenty-one".