65720153 has 2 divisors, whose sum is σ = 65720154. Its totient is φ = 65720152.

The previous prime is 65720141. The next prime is 65720191. The reversal of 65720153 is 35102756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 24285184 = 6437^2 + 4928^2 .

It is a cyclic number.

It is not a de Polignac number, because 65720153 - 2⁸ = 65719897 is a prime.

It is a super-3 number, since 3×65720153³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65720353) 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 as a sum of consecutive naturals, namely, 32860076 + 32860077.

It is an arithmetic number, because the mean of its divisors is an integer number (32860077).

Almost surely, 2^65720153 is an apocalyptic number.

It is an amenable number.

65720153 is a deficient number, since it is larger than the sum of its proper divisors (1).

65720153 is an equidigital number, since it uses as much as digits as its factorization.

65720153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 65720153 is about 8106.7967163362. The cubic root of 65720153 is about 403.5520166625.

The spelling of 65720153 in words is "sixty-five million, seven hundred twenty thousand, one hundred fifty-three".