65655493 has 2 divisors, whose sum is σ = 65655494. Its totient is φ = 65655492.

The previous prime is 65655481. The next prime is 65655503. The reversal of 65655493 is 39455656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45603009 + 20052484 = 6753^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 65655493 - 2⁵ = 65655461 is a prime.

It is a super-2 number, since 2×65655493² = 8621287522146098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65655413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32827746 + 32827747.

It is an arithmetic number, because the mean of its divisors is an integer number (32827747).

Almost surely, 2^65655493 is an apocalyptic number.

It is an amenable number.

65655493 is a deficient number, since it is larger than the sum of its proper divisors (1).

65655493 is an equidigital number, since it uses as much as digits as its factorization.

65655493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 43.

The square root of 65655493 is about 8102.8077232525. The cubic root of 65655493 is about 403.4196258383.

The spelling of 65655493 in words is "sixty-five million, six hundred fifty-five thousand, four hundred ninety-three".