65668373 has 2 divisors, whose sum is σ = 65668374. Its totient is φ = 65668372.

The previous prime is 65668349. The next prime is 65668387. The reversal of 65668373 is 37386656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 21883684 = 6617^2 + 4678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65668373 is a prime.

It is a super-3 number, since 3×65668373³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65668333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32834186 + 32834187.

It is an arithmetic number, because the mean of its divisors is an integer number (32834187).

Almost surely, 2^65668373 is an apocalyptic number.

It is an amenable number.

65668373 is a deficient number, since it is larger than the sum of its proper divisors (1).

65668373 is an equidigital number, since it uses as much as digits as its factorization.

65668373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The square root of 65668373 is about 8103.6024705066. The cubic root of 65668373 is about 403.4460044641.

The spelling of 65668373 in words is "sixty-five million, six hundred sixty-eight thousand, three hundred seventy-three".